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d="scan'208";a="412561449" Received: from rcdn-l-core-12.cisco.com ([173.37.255.149]) by rcdn-iport-2.cisco.com with ESMTP/TLS/TLS_AES_256_GCM_SHA384; 10 Dec 2025 15:09:13 +0000 Received: from sjc-ads-3552.cisco.com (sjc-ads-3552.cisco.com [171.68.249.250]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by rcdn-l-core-12.cisco.com (Postfix) with ESMTPS id D34B4180001C6 for ; Wed, 10 Dec 2025 15:09:12 +0000 (GMT) Received: by sjc-ads-3552.cisco.com (Postfix, from userid 1795984) id 76ABDCC12B5; Wed, 10 Dec 2025 07:09:11 -0800 (PST) From: "Deepak Rathore -X (deeratho - E INFOCHIPS PRIVATE LIMITED at Cisco)" To: openembedded-core@lists.openembedded.org Subject: [OE-core] [scarthgap] [PATCH 1/2] cups 2.4.11: Fix CVE-2025-58436 Date: Wed, 10 Dec 2025 07:08:57 -0800 Message-Id: <20251210150857.2780243-1-deeratho@cisco.com> X-Mailer: git-send-email 2.35.6 MIME-Version: 1.0 X-Outbound-SMTP-Client: 171.68.249.250, sjc-ads-3552.cisco.com X-Outbound-Node: rcdn-l-core-12.cisco.com List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 10 Dec 2025 15:09:23 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/227483 From: Deepak Rathore Upstream Repository: https://github.com/OpenPrinting/cups.git Bug Details: https://nvd.nist.gov/vuln/detail/CVE-2025-58436 Type: Security Fix CVE: CVE-2025-58436 Score: 5.5 Patch: https://github.com/OpenPrinting/cups/commit/5d414f1f91bd Signed-off-by: Deepak Rathore diff --git a/meta/recipes-extended/cups/cups.inc b/meta/recipes-extended/cups/cups.inc index 0a26a9b6de..cf3df32306 100644 --- a/meta/recipes-extended/cups/cups.inc +++ b/meta/recipes-extended/cups/cups.inc @@ -17,6 +17,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/cups-${PV}-source.tar.gz \ file://cups-volatiles.conf \ file://CVE-2025-58060.patch \ file://CVE-2025-58364.patch \ + file://CVE-2025-58436.patch \ " GITHUB_BASE_URI = "https://github.com/OpenPrinting/cups/releases" diff --git a/meta/recipes-extended/cups/cups/CVE-2025-58436.patch b/meta/recipes-extended/cups/cups/CVE-2025-58436.patch new file mode 100644 index 0000000000..ebb68dabe9 --- /dev/null +++ b/meta/recipes-extended/cups/cups/CVE-2025-58436.patch @@ -0,0 +1,634 @@ +From d8707cbc36ce3daf03a8bc683b347359e058b9f6 Mon Sep 17 00:00:00 2001 +From: Zdenek Dohnal +Date: Mon, 13 Oct 2025 10:16:48 +0200 +Subject: [PATCH] Fix unresponsive cupsd process caused by a slow client + +If client is very slow, it will slow cupsd process for other clients. +The fix is the best effort without turning scheduler cupsd into +multithreaded process which would be too complex and error-prone when +backporting to 2.4.x series. + +The fix for unencrypted communication is to follow up on communication +only if there is the whole line on input, and the waiting time is +guarded by timeout. + +Encrypted communication now starts after we have the whole client hello +packet, which conflicts with optional upgrade support to HTTPS via +methods other than method OPTIONS, so this optional support defined in +RFC 2817, section 3.1 is removed. Too slow or incomplete requests are +handled by connection timeout. + +Fixes CVE-2025-58436 + +CVE: CVE-2025-58436 +Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/5d414f1f91bd] + +(cherry picked from commit 5d414f1f91bdca118413301b148f0b188eb1cdc6) +Signed-off-by: Deepak Rathore +--- + cups/http-private.h | 7 +- + cups/http.c | 80 +++++++++++++------- + cups/tls-openssl.c | 15 +++- + scheduler/client.c | 178 ++++++++++++++++++++++++++++---------------- + scheduler/client.h | 3 + + scheduler/select.c | 12 +++ + 6 files changed, 198 insertions(+), 97 deletions(-) + +diff --git a/cups/http-private.h b/cups/http-private.h +index 5f77b8ef0..b8e200bf6 100644 +--- a/cups/http-private.h ++++ b/cups/http-private.h +@@ -121,6 +121,7 @@ extern "C" { + * Constants... + */ + ++# define _HTTP_MAX_BUFFER 32768 /* Size of read buffer */ + # define _HTTP_MAX_SBUFFER 65536 /* Size of (de)compression buffer */ + # define _HTTP_RESOLVE_DEFAULT 0 /* Just resolve with default options */ + # define _HTTP_RESOLVE_STDERR 1 /* Log resolve progress to stderr */ +@@ -232,8 +233,8 @@ struct _http_s /**** HTTP connection structure ****/ + http_encoding_t data_encoding; /* Chunked or not */ + int _data_remaining;/* Number of bytes left (deprecated) */ + int used; /* Number of bytes used in buffer */ +- char buffer[HTTP_MAX_BUFFER]; +- /* Buffer for incoming data */ ++ char _buffer[HTTP_MAX_BUFFER]; ++ /* Old read buffer (deprecated) */ + int _auth_type; /* Authentication in use (deprecated) */ + unsigned char _md5_state[88]; /* MD5 state (deprecated) */ + char nonce[HTTP_MAX_VALUE]; +@@ -307,6 +308,8 @@ struct _http_s /**** HTTP connection structure ****/ + /* Allocated field values */ + *default_fields[HTTP_FIELD_MAX]; + /* Default field values, if any */ ++ char buffer[_HTTP_MAX_BUFFER]; ++ /* Read buffer */ + }; + # endif /* !_HTTP_NO_PRIVATE */ + +diff --git a/cups/http.c b/cups/http.c +index 31a8be361..599703c7b 100644 +--- a/cups/http.c ++++ b/cups/http.c +@@ -53,7 +53,7 @@ static http_t *http_create(const char *host, int port, + static void http_debug_hex(const char *prefix, const char *buffer, + int bytes); + #endif /* DEBUG */ +-static ssize_t http_read(http_t *http, char *buffer, size_t length); ++static ssize_t http_read(http_t *http, char *buffer, size_t length, int timeout); + static ssize_t http_read_buffered(http_t *http, char *buffer, size_t length); + static ssize_t http_read_chunk(http_t *http, char *buffer, size_t length); + static int http_send(http_t *http, http_state_t request, +@@ -1200,7 +1200,7 @@ httpGets(char *line, /* I - Line to read into */ + return (NULL); + } + +- bytes = http_read(http, http->buffer + http->used, (size_t)(HTTP_MAX_BUFFER - http->used)); ++ bytes = http_read(http, http->buffer + http->used, (size_t)(_HTTP_MAX_BUFFER - http->used), http->wait_value); + + DEBUG_printf(("4httpGets: read " CUPS_LLFMT " bytes.", CUPS_LLCAST bytes)); + +@@ -1720,24 +1720,13 @@ httpPeek(http_t *http, /* I - HTTP connection */ + + ssize_t buflen; /* Length of read for buffer */ + +- if (!http->blocking) +- { +- while (!httpWait(http, http->wait_value)) +- { +- if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data)) +- continue; +- +- return (0); +- } +- } +- + if ((size_t)http->data_remaining > sizeof(http->buffer)) + buflen = sizeof(http->buffer); + else + buflen = (ssize_t)http->data_remaining; + + DEBUG_printf(("2httpPeek: Reading %d bytes into buffer.", (int)buflen)); +- bytes = http_read(http, http->buffer, (size_t)buflen); ++ bytes = http_read(http, http->buffer, (size_t)buflen, http->wait_value); + + DEBUG_printf(("2httpPeek: Read " CUPS_LLFMT " bytes into buffer.", + CUPS_LLCAST bytes)); +@@ -1758,9 +1747,9 @@ httpPeek(http_t *http, /* I - HTTP connection */ + int zerr; /* Decompressor error */ + z_stream stream; /* Copy of decompressor stream */ + +- if (http->used > 0 && ((z_stream *)http->stream)->avail_in < HTTP_MAX_BUFFER) ++ if (http->used > 0 && ((z_stream *)http->stream)->avail_in < _HTTP_MAX_BUFFER) + { +- size_t buflen = HTTP_MAX_BUFFER - ((z_stream *)http->stream)->avail_in; ++ size_t buflen = _HTTP_MAX_BUFFER - ((z_stream *)http->stream)->avail_in; + /* Number of bytes to copy */ + + if (((z_stream *)http->stream)->avail_in > 0 && +@@ -2018,7 +2007,7 @@ httpRead2(http_t *http, /* I - HTTP connection */ + + if (bytes == 0) + { +- ssize_t buflen = HTTP_MAX_BUFFER - (ssize_t)((z_stream *)http->stream)->avail_in; ++ ssize_t buflen = _HTTP_MAX_BUFFER - (ssize_t)((z_stream *)http->stream)->avail_in; + /* Additional bytes for buffer */ + + if (buflen > 0) +@@ -2768,7 +2757,7 @@ int /* O - 1 to continue, 0 to stop */ + _httpUpdate(http_t *http, /* I - HTTP connection */ + http_status_t *status) /* O - Current HTTP status */ + { +- char line[32768], /* Line from connection... */ ++ char line[_HTTP_MAX_BUFFER], /* Line from connection... */ + *value; /* Pointer to value on line */ + http_field_t field; /* Field index */ + int major, minor; /* HTTP version numbers */ +@@ -2776,12 +2765,46 @@ _httpUpdate(http_t *http, /* I - HTTP connection */ + + DEBUG_printf(("_httpUpdate(http=%p, status=%p), state=%s", (void *)http, (void *)status, httpStateString(http->state))); + ++ /* When doing non-blocking I/O, make sure we have a whole line... */ ++ if (!http->blocking) ++ { ++ ssize_t bytes; /* Bytes "peeked" from connection */ ++ ++ /* See whether our read buffer is full... */ ++ DEBUG_printf(("2_httpUpdate: used=%d", http->used)); ++ ++ if (http->used > 0 && !memchr(http->buffer, '\n', (size_t)http->used) && (size_t)http->used < sizeof(http->buffer)) ++ { ++ /* No, try filling in more data... */ ++ if ((bytes = http_read(http, http->buffer + http->used, sizeof(http->buffer) - (size_t)http->used, /*timeout*/0)) > 0) ++ { ++ DEBUG_printf(("2_httpUpdate: Read %d bytes.", (int)bytes)); ++ http->used += (int)bytes; ++ } ++ } ++ ++ /* Peek at the incoming data... */ ++ if (!http->used || !memchr(http->buffer, '\n', (size_t)http->used)) ++ { ++ /* Don't have a full line, tell the reader to try again when there is more data... */ ++ DEBUG_puts("1_htttpUpdate: No newline in buffer yet."); ++ if ((size_t)http->used == sizeof(http->buffer)) ++ *status = HTTP_STATUS_ERROR; ++ else ++ *status = HTTP_STATUS_CONTINUE; ++ return (0); ++ } ++ ++ DEBUG_puts("2_httpUpdate: Found newline in buffer."); ++ } ++ + /* + * Grab a single line from the connection... + */ + + if (!httpGets(line, sizeof(line), http)) + { ++ DEBUG_puts("1_httpUpdate: Error reading request line."); + *status = HTTP_STATUS_ERROR; + return (0); + } +@@ -4134,7 +4157,8 @@ http_debug_hex(const char *prefix, /* I - Prefix for line */ + static ssize_t /* O - Number of bytes read or -1 on error */ + http_read(http_t *http, /* I - HTTP connection */ + char *buffer, /* I - Buffer */ +- size_t length) /* I - Maximum bytes to read */ ++ size_t length, /* I - Maximum bytes to read */ ++ int timeout) /* I - Wait timeout */ + { + ssize_t bytes; /* Bytes read */ + +@@ -4143,7 +4167,7 @@ http_read(http_t *http, /* I - HTTP connection */ + + if (!http->blocking || http->timeout_value > 0.0) + { +- while (!httpWait(http, http->wait_value)) ++ while (!_httpWait(http, timeout, 1)) + { + if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data)) + continue; +@@ -4246,7 +4270,7 @@ http_read_buffered(http_t *http, /* I - HTTP connection */ + else + bytes = (ssize_t)length; + +- DEBUG_printf(("8http_read: Grabbing %d bytes from input buffer.", ++ DEBUG_printf(("8http_read_buffered: Grabbing %d bytes from input buffer.", + (int)bytes)); + + memcpy(buffer, http->buffer, (size_t)bytes); +@@ -4256,7 +4280,7 @@ http_read_buffered(http_t *http, /* I - HTTP connection */ + memmove(http->buffer, http->buffer + bytes, (size_t)http->used); + } + else +- bytes = http_read(http, buffer, length); ++ bytes = http_read(http, buffer, length, http->wait_value); + + return (bytes); + } +@@ -4597,15 +4621,15 @@ http_set_timeout(int fd, /* I - File descriptor */ + static void + http_set_wait(http_t *http) /* I - HTTP connection */ + { +- if (http->blocking) +- { +- http->wait_value = (int)(http->timeout_value * 1000); ++ http->wait_value = (int)(http->timeout_value * 1000); + +- if (http->wait_value <= 0) ++ if (http->wait_value <= 0) ++ { ++ if (http->blocking) + http->wait_value = 60000; ++ else ++ http->wait_value = 1000; + } +- else +- http->wait_value = 10000; + } + + +diff --git a/cups/tls-openssl.c b/cups/tls-openssl.c +index 9fcbe0af3..f746f4cba 100644 +--- a/cups/tls-openssl.c ++++ b/cups/tls-openssl.c +@@ -215,12 +215,14 @@ cupsMakeServerCredentials( + // Save them... + if ((bio = BIO_new_file(keyfile, "wb")) == NULL) + { ++ DEBUG_printf(("1cupsMakeServerCredentials: Unable to create private key file '%s': %s", keyfile, strerror(errno))); + _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); + goto done; + } + + if (!PEM_write_bio_PrivateKey(bio, pkey, NULL, NULL, 0, NULL, NULL)) + { ++ DEBUG_puts("1cupsMakeServerCredentials: PEM_write_bio_PrivateKey failed."); + _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to write private key."), 1); + BIO_free(bio); + goto done; +@@ -230,12 +232,14 @@ cupsMakeServerCredentials( + + if ((bio = BIO_new_file(crtfile, "wb")) == NULL) + { ++ DEBUG_printf(("1cupsMakeServerCredentials: Unable to create certificate file '%s': %s", crtfile, strerror(errno))); + _cupsSetError(IPP_STATUS_ERROR_INTERNAL, strerror(errno), 0); + goto done; + } + + if (!PEM_write_bio_X509(bio, cert)) + { ++ DEBUG_puts("1cupsMakeServerCredentials: PEM_write_bio_X509 failed."); + _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to write X.509 certificate."), 1); + BIO_free(bio); + goto done; +@@ -1082,10 +1086,10 @@ _httpTLSStart(http_t *http) // I - Connection to server + + if (!cupsMakeServerCredentials(tls_keypath, cn, 0, NULL, time(NULL) + 3650 * 86400)) + { +- DEBUG_puts("4_httpTLSStart: cupsMakeServerCredentials failed."); ++ DEBUG_printf(("4_httpTLSStart: cupsMakeServerCredentials failed: %s", cupsLastErrorString())); + http->error = errno = EINVAL; + http->status = HTTP_STATUS_ERROR; +- _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create server credentials."), 1); ++// _cupsSetError(IPP_STATUS_ERROR_INTERNAL, _("Unable to create server credentials."), 1); + SSL_CTX_free(context); + _cupsMutexUnlock(&tls_mutex); + +@@ -1346,14 +1350,17 @@ http_bio_read(BIO *h, // I - BIO data + + http = (http_t *)BIO_get_data(h); + +- if (!http->blocking) ++ if (!http->blocking || http->timeout_value > 0.0) + { + /* + * Make sure we have data before we read... + */ + +- if (!_httpWait(http, 10000, 0)) ++ while (!_httpWait(http, http->wait_value, 0)) + { ++ if (http->timeout_cb && (*http->timeout_cb)(http, http->timeout_data)) ++ continue; ++ + #ifdef WIN32 + http->error = WSAETIMEDOUT; + #else +diff --git a/scheduler/client.c b/scheduler/client.c +index 233f9017d..d495d9a75 100644 +--- a/scheduler/client.c ++++ b/scheduler/client.c +@@ -34,11 +34,11 @@ + + static int check_if_modified(cupsd_client_t *con, + struct stat *filestats); +-static int compare_clients(cupsd_client_t *a, cupsd_client_t *b, +- void *data); + #ifdef HAVE_TLS +-static int cupsd_start_tls(cupsd_client_t *con, http_encryption_t e); ++static int check_start_tls(cupsd_client_t *con); + #endif /* HAVE_TLS */ ++static int compare_clients(cupsd_client_t *a, cupsd_client_t *b, ++ void *data); + static char *get_file(cupsd_client_t *con, struct stat *filestats, + char *filename, size_t len); + static http_status_t install_cupsd_conf(cupsd_client_t *con); +@@ -360,14 +360,20 @@ cupsdAcceptClient(cupsd_listener_t *lis)/* I - Listener socket */ + if (lis->encryption == HTTP_ENCRYPTION_ALWAYS) + { + /* +- * https connection; go secure... ++ * HTTPS connection, force TLS negotiation... + */ + +- if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS)) +- cupsdCloseClient(con); ++ con->tls_start = time(NULL); ++ con->encryption = HTTP_ENCRYPTION_ALWAYS; + } + else ++ { ++ /* ++ * HTTP connection, but check for HTTPS negotiation on first data... ++ */ ++ + con->auto_ssl = 1; ++ } + #endif /* HAVE_TLS */ + } + +@@ -606,17 +612,46 @@ cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */ + + con->auto_ssl = 0; + +- if (recv(httpGetFd(con->http), buf, 1, MSG_PEEK) == 1 && +- (!buf[0] || !strchr("DGHOPT", buf[0]))) ++ if (recv(httpGetFd(con->http), buf, 5, MSG_PEEK) == 5 && buf[0] == 0x16 && buf[1] == 3 && buf[2]) + { + /* +- * Encrypt this connection... ++ * Client hello record, encrypt this connection... + */ + +- cupsdLogClient(con, CUPSD_LOG_DEBUG2, "Saw first byte %02X, auto-negotiating SSL/TLS session.", buf[0] & 255); ++ cupsdLogClient(con, CUPSD_LOG_DEBUG2, "Saw client hello record, auto-negotiating TLS session."); ++ con->tls_start = time(NULL); ++ con->encryption = HTTP_ENCRYPTION_ALWAYS; ++ } ++ } + +- if (cupsd_start_tls(con, HTTP_ENCRYPTION_ALWAYS)) +- cupsdCloseClient(con); ++ if (con->tls_start) ++ { ++ /* ++ * Try negotiating TLS... ++ */ ++ ++ int tls_status = check_start_tls(con); ++ ++ if (tls_status < 0) ++ { ++ /* ++ * TLS negotiation failed, close the connection. ++ */ ++ ++ cupsdCloseClient(con); ++ return; ++ } ++ else if (tls_status == 0) ++ { ++ /* ++ * Nothing to do yet... ++ */ ++ ++ if ((time(NULL) - con->tls_start) > 5) ++ { ++ // Timeout, close the connection... ++ cupsdCloseClient(con); ++ } + + return; + } +@@ -780,9 +815,7 @@ cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */ + * Parse incoming parameters until the status changes... + */ + +- while ((status = httpUpdate(con->http)) == HTTP_STATUS_CONTINUE) +- if (!httpGetReady(con->http)) +- break; ++ status = httpUpdate(con->http); + + if (status != HTTP_STATUS_OK && status != HTTP_STATUS_CONTINUE) + { +@@ -944,11 +977,10 @@ cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */ + return; + } + +- if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED)) +- { +- cupsdCloseClient(con); +- return; +- } ++ con->tls_start = time(NULL); ++ con->tls_upgrade = 1; ++ con->encryption = HTTP_ENCRYPTION_REQUIRED; ++ return; + #else + if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE)) + { +@@ -987,32 +1019,11 @@ cupsdReadClient(cupsd_client_t *con) /* I - Client to read from */ + if (!_cups_strcasecmp(httpGetField(con->http, HTTP_FIELD_CONNECTION), + "Upgrade") && !httpIsEncrypted(con->http)) + { +-#ifdef HAVE_TLS +- /* +- * Do encryption stuff... +- */ +- +- httpClearFields(con->http); +- +- if (!cupsdSendHeader(con, HTTP_STATUS_SWITCHING_PROTOCOLS, NULL, +- CUPSD_AUTH_NONE)) +- { +- cupsdCloseClient(con); +- return; +- } +- +- if (cupsd_start_tls(con, HTTP_ENCRYPTION_REQUIRED)) +- { +- cupsdCloseClient(con); +- return; +- } +-#else + if (!cupsdSendError(con, HTTP_STATUS_NOT_IMPLEMENTED, CUPSD_AUTH_NONE)) + { + cupsdCloseClient(con); + return; + } +-#endif /* HAVE_TLS */ + } + + if ((status = cupsdIsAuthorized(con, NULL)) != HTTP_STATUS_OK) +@@ -2685,6 +2696,69 @@ check_if_modified( + } + + ++#ifdef HAVE_TLS ++/* ++ * 'check_start_tls()' - Start encryption on a connection. ++ */ ++ ++static int /* O - 0 to continue, 1 on success, -1 on error */ ++check_start_tls(cupsd_client_t *con) /* I - Client connection */ ++{ ++ unsigned char chello[4096]; /* Client hello record */ ++ ssize_t chello_bytes; /* Bytes read/peeked */ ++ int chello_len; /* Length of record */ ++ ++ ++ /* ++ * See if we have a good and complete client hello record... ++ */ ++ ++ if ((chello_bytes = recv(httpGetFd(con->http), (char *)chello, sizeof(chello), MSG_PEEK)) < 5) ++ return (0); /* Not enough bytes (yet) */ ++ ++ if (chello[0] != 0x016 || chello[1] != 3 || chello[2] == 0) ++ return (-1); /* Not a TLS Client Hello record */ ++ ++ chello_len = (chello[3] << 8) | chello[4]; ++ ++ if ((chello_len + 5) > chello_bytes) ++ return (0); /* Not enough bytes yet */ ++ ++ /* ++ * OK, we do, try negotiating... ++ */ ++ ++ con->tls_start = 0; ++ ++ if (httpEncryption(con->http, con->encryption)) ++ { ++ cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s", cupsLastErrorString()); ++ return (-1); ++ } ++ ++ cupsdLogClient(con, CUPSD_LOG_DEBUG, "Connection now encrypted."); ++ ++ if (con->tls_upgrade) ++ { ++ // Respond to the original OPTIONS command... ++ con->tls_upgrade = 0; ++ ++ httpClearFields(con->http); ++ httpClearCookie(con->http); ++ httpSetField(con->http, HTTP_FIELD_CONTENT_LENGTH, "0"); ++ ++ if (!cupsdSendHeader(con, HTTP_STATUS_OK, NULL, CUPSD_AUTH_NONE)) ++ { ++ cupsdCloseClient(con); ++ return (-1); ++ } ++ } ++ ++ return (1); ++} ++#endif /* HAVE_TLS */ ++ ++ + /* + * 'compare_clients()' - Compare two client connections. + */ +@@ -2705,28 +2779,6 @@ compare_clients(cupsd_client_t *a, /* I - First client */ + } + + +-#ifdef HAVE_TLS +-/* +- * 'cupsd_start_tls()' - Start encryption on a connection. +- */ +- +-static int /* O - 0 on success, -1 on error */ +-cupsd_start_tls(cupsd_client_t *con, /* I - Client connection */ +- http_encryption_t e) /* I - Encryption mode */ +-{ +- if (httpEncryption(con->http, e)) +- { +- cupsdLogClient(con, CUPSD_LOG_ERROR, "Unable to encrypt connection: %s", +- cupsLastErrorString()); +- return (-1); +- } +- +- cupsdLogClient(con, CUPSD_LOG_DEBUG, "Connection now encrypted."); +- return (0); +-} +-#endif /* HAVE_TLS */ +- +- + /* + * 'get_file()' - Get a filename and state info. + */ +diff --git a/scheduler/client.h b/scheduler/client.h +index 9fe4e2ea6..2939ce997 100644 +--- a/scheduler/client.h ++++ b/scheduler/client.h +@@ -53,6 +53,9 @@ struct cupsd_client_s + cups_lang_t *language; /* Language to use */ + #ifdef HAVE_TLS + int auto_ssl; /* Automatic test for SSL/TLS */ ++ time_t tls_start; /* Do TLS negotiation? */ ++ int tls_upgrade; /* Doing TLS upgrade via OPTIONS? */ ++ http_encryption_t encryption; /* Type of TLS negotiation */ + #endif /* HAVE_TLS */ + http_addr_t clientaddr; /* Client's server address */ + char clientname[256];/* Client's server name for connection */ +diff --git a/scheduler/select.c b/scheduler/select.c +index 2e64f2a7e..ac6205c51 100644 +--- a/scheduler/select.c ++++ b/scheduler/select.c +@@ -408,6 +408,9 @@ cupsdDoSelect(long timeout) /* I - 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E INFOCHIPS PRIVATE LIMITED at Cisco)" To: openembedded-core@lists.openembedded.org Subject: [OE-core] [scarthgap] [PATCH 2/2] cups 2.4.11: Fix CVE-2025-61915 Date: Wed, 10 Dec 2025 07:10:21 -0800 Message-Id: <20251210151021.2784035-1-deeratho@cisco.com> X-Mailer: git-send-email 2.35.6 MIME-Version: 1.0 X-Outbound-SMTP-Client: 171.68.249.250, sjc-ads-3552.cisco.com X-Outbound-Node: rcdn-l-core-10.cisco.com List-Id: X-Webhook-Received: from 45-33-107-173.ip.linodeusercontent.com [45.33.107.173] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 10 Dec 2025 15:10:44 -0000 X-Groupsio-URL: https://lists.openembedded.org/g/openembedded-core/message/227484 From: Deepak Rathore Upstream Repository: https://github.com/OpenPrinting/cups.git Bug Details: https://nvd.nist.gov/vuln/detail/CVE-2025-61915 Type: Security Fix CVE: CVE-2025-61915 Score: 6.7 Patch: https://github.com/OpenPrinting/cups/commit/db8d560262c2 Signed-off-by: Deepak Rathore diff --git a/meta/recipes-extended/cups/cups.inc b/meta/recipes-extended/cups/cups.inc index cf3df32306..12668ca023 100644 --- a/meta/recipes-extended/cups/cups.inc +++ b/meta/recipes-extended/cups/cups.inc @@ -18,6 +18,7 @@ SRC_URI = "${GITHUB_BASE_URI}/download/v${PV}/cups-${PV}-source.tar.gz \ file://CVE-2025-58060.patch \ file://CVE-2025-58364.patch \ file://CVE-2025-58436.patch \ + file://CVE-2025-61915.patch \ " GITHUB_BASE_URI = "https://github.com/OpenPrinting/cups/releases" diff --git a/meta/recipes-extended/cups/cups/CVE-2025-61915.patch b/meta/recipes-extended/cups/cups/CVE-2025-61915.patch new file mode 100644 index 0000000000..ad91c66b73 --- /dev/null +++ b/meta/recipes-extended/cups/cups/CVE-2025-61915.patch @@ -0,0 +1,491 @@ +From 3ff24bbe1d0e11a2edb5cac0ae421b8e95220651 Mon Sep 17 00:00:00 2001 +From: Zdenek Dohnal +Date: Fri, 21 Nov 2025 07:36:36 +0100 +Subject: [PATCH] Fix various issues in cupsd + +Various issues were found by @SilverPlate3, recognized as CVE-2025-61915: + +- out of bound write when handling IPv6 addresses, +- cupsd crash caused by null dereference when ErrorPolicy value is empty, + +On the top of that, Mike Sweet noticed vulnerability via domain socket, +exploitable locally if attacker has access to domain socket and knows username +of user within a group which is present in CUPS system groups: + +- rewrite of cupsd.conf via PeerCred authorization via domain socket + +The last vulnerability is fixed by introducing PeerCred directive for cups-files.conf, +which controls whether PeerCred is enabled/disabled for user in CUPS system groups. + +Fixes CVE-2025-61915 + +CVE: CVE-2025-61915 +Upstream-Status: Backport [https://github.com/OpenPrinting/cups/commit/db8d560262c2] + +(cherry picked from commit db8d560262c22a21ee1e55dfd62fa98d9359bcb0) +Signed-off-by: Deepak Rathore +--- + conf/cups-files.conf.in | 3 ++ + config-scripts/cups-defaults.m4 | 9 +++++ + config.h.in | 7 ++++ + configure | 22 ++++++++++ + doc/help/man-cups-files.conf.html | 9 ++++- + man/cups-files.conf.5 | 17 ++++++-- + scheduler/auth.c | 8 +++- + scheduler/auth.h | 7 ++++ + scheduler/client.c | 2 +- + scheduler/conf.c | 60 ++++++++++++++++++++++++---- + test/run-stp-tests.sh | 2 +- + vcnet/config.h | 7 ++++ + xcode/CUPS.xcodeproj/project.pbxproj | 2 - + xcode/config.h | 7 ++++ + 14 files changed, 145 insertions(+), 17 deletions(-) + +diff --git a/conf/cups-files.conf.in b/conf/cups-files.conf.in +index 27d8be96f..bc999e420 100644 +--- a/conf/cups-files.conf.in ++++ b/conf/cups-files.conf.in +@@ -22,6 +22,9 @@ + SystemGroup @CUPS_SYSTEM_GROUPS@ + @CUPS_SYSTEM_AUTHKEY@ + ++# Are Unix domain socket peer credentials used for authorization? ++PeerCred @CUPS_PEER_CRED@ ++ + # User that is substituted for unauthenticated (remote) root accesses... + #RemoteRoot remroot + +diff --git a/config-scripts/cups-defaults.m4 b/config-scripts/cups-defaults.m4 +index 27e5bc472..b4f03d624 100644 +--- a/config-scripts/cups-defaults.m4 ++++ b/config-scripts/cups-defaults.m4 +@@ -129,6 +129,15 @@ AC_ARG_WITH([log_level], AS_HELP_STRING([--with-log-level], [set default LogLeve + AC_SUBST([CUPS_LOG_LEVEL]) + AC_DEFINE_UNQUOTED([CUPS_DEFAULT_LOG_LEVEL], ["$CUPS_LOG_LEVEL"], [Default LogLevel value.]) + ++dnl Default PeerCred ++AC_ARG_WITH([peer_cred], AS_HELP_STRING([--with-peer-cred], [set default PeerCred value (on/off/root-only), default=on]), [ ++ CUPS_PEER_CRED="$withval" ++], [ ++ CUPS_PEER_CRED="on" ++]) ++AC_SUBST([CUPS_PEER_CRED]) ++AC_DEFINE_UNQUOTED([CUPS_DEFAULT_PEER_CRED], ["$CUPS_PEER_CRED"], [Default PeerCred value.]) ++ + dnl Default AccessLogLevel + AC_ARG_WITH(access_log_level, [ --with-access-log-level set default AccessLogLevel value, default=none], + CUPS_ACCESS_LOG_LEVEL="$withval", +diff --git a/config.h.in b/config.h.in +index 6940b9604..222b3b5bf 100644 +--- a/config.h.in ++++ b/config.h.in +@@ -86,6 +86,13 @@ + #define CUPS_DEFAULT_ERROR_POLICY "stop-printer" + + ++/* ++ * Default PeerCred value... ++ */ ++ ++#define CUPS_DEFAULT_PEER_CRED "on" ++ ++ + /* + * Default MaxCopies value... + */ +diff --git a/configure b/configure +index f8147c9d6..f456c8588 100755 +--- a/configure ++++ b/configure +@@ -672,6 +672,7 @@ CUPS_BROWSING + CUPS_SYNC_ON_CLOSE + CUPS_PAGE_LOG_FORMAT + CUPS_ACCESS_LOG_LEVEL ++CUPS_PEER_CRED + CUPS_LOG_LEVEL + CUPS_FATAL_ERRORS + CUPS_ERROR_POLICY +@@ -925,6 +926,7 @@ with_max_log_size + with_error_policy + with_fatal_errors + with_log_level ++with_peer_cred + with_access_log_level + enable_page_logging + enable_sync_on_close +@@ -1661,6 +1663,8 @@ Optional Packages: + --with-error-policy set default ErrorPolicy value, default=stop-printer + --with-fatal-errors set default FatalErrors value, default=config + --with-log-level set default LogLevel value, default=warn ++ --with-peer-cred set default PeerCred value (on/off/root-only), ++ default=on + --with-access-log-level set default AccessLogLevel value, default=none + --with-local-protocols set default BrowseLocalProtocols, default="" + --with-cups-user set default user for CUPS +@@ -11718,6 +11722,24 @@ printf "%s\n" "#define CUPS_DEFAULT_LOG_LEVEL \"$CUPS_LOG_LEVEL\"" >>confdefs.h + + + ++# Check whether --with-peer_cred was given. ++if test ${with_peer_cred+y} ++then : ++ withval=$with_peer_cred; ++ CUPS_PEER_CRED="$withval" ++ ++else $as_nop ++ ++ CUPS_PEER_CRED="on" ++ ++fi ++ ++ ++ ++printf "%s\n" "#define CUPS_DEFAULT_PEER_CRED \"$CUPS_PEER_CRED\"" >>confdefs.h ++ ++ ++ + # Check whether --with-access_log_level was given. + if test ${with_access_log_level+y} + then : +diff --git a/doc/help/man-cups-files.conf.html b/doc/help/man-cups-files.conf.html +index c0c775dec..5a9ddefeb 100644 +--- a/doc/help/man-cups-files.conf.html ++++ b/doc/help/man-cups-files.conf.html +@@ -119,6 +119,13 @@ The default is "/var/log/cups/page_log". +
PassEnv variable [ ... variable ] +
Passes the specified environment variable(s) to child processes. + Note: the standard CUPS filter and backend environment variables cannot be overridden using this directive. ++
PeerCred off ++
PeerCred on ++
PeerCred root-only ++
Specifies whether peer credentials are used for authorization when communicating over the UNIX domain socket. ++When on, the peer credentials of any user are accepted for authorization. ++The value off disables the use of peer credentials entirely, while the value root-only allows peer credentials only for the root user. ++Note: for security reasons, the on setting is reduced to root-only for authorization of PUT requests. +
RemoteRoot username +
Specifies the username that is associated with unauthenticated accesses by clients claiming to be the root user. + The default is "remroot". +@@ -207,7 +214,7 @@ command is used instead. + subscriptions.conf(5), + CUPS Online Help (http://localhost:631/help) +

Copyright

+-Copyright © 2020-2023 by OpenPrinting. ++Copyright © 2020-2025 by OpenPrinting. + + + +diff --git a/man/cups-files.conf.5 b/man/cups-files.conf.5 +index 8358b62a1..107072c3c 100644 +--- a/man/cups-files.conf.5 ++++ b/man/cups-files.conf.5 +@@ -1,14 +1,14 @@ + .\" + .\" cups-files.conf man page for CUPS. + .\" +-.\" Copyright © 2020-2024 by OpenPrinting. ++.\" Copyright © 2020-2025 by OpenPrinting. + .\" Copyright © 2007-2019 by Apple Inc. + .\" Copyright © 1997-2006 by Easy Software Products. + .\" + .\" Licensed under Apache License v2.0. See the file "LICENSE" for more + .\" information. + .\" +-.TH cups-files.conf 5 "CUPS" "2021-03-06" "OpenPrinting" ++.TH cups-files.conf 5 "CUPS" "2025-10-08" "OpenPrinting" + .SH NAME + cups\-files.conf \- file and directory configuration file for cups + .SH DESCRIPTION +@@ -166,6 +166,17 @@ The default is "/var/log/cups/page_log". + \fBPassEnv \fIvariable \fR[ ... \fIvariable \fR] + Passes the specified environment variable(s) to child processes. + Note: the standard CUPS filter and backend environment variables cannot be overridden using this directive. ++.\"#PeerCred ++.TP 5 ++\fBPeerCred off\fR ++.TP 5 ++\fBPeerCred on\fR ++.TP 5 ++\fBPeerCred root-only\fR ++Specifies whether peer credentials are used for authorization when communicating over the UNIX domain socket. ++When \fBon\fR, the peer credentials of any user are accepted for authorization. ++The value \fBoff\fR disables the use of peer credentials entirely, while the value \fBroot-only\fR allows peer credentials only for the root user. ++Note: for security reasons, the \fBon\fR setting is reduced to \fBroot-only\fR for authorization of PUT requests. + .\"#RemoteRoot + .TP 5 + \fBRemoteRoot \fIusername\fR +@@ -289,4 +300,4 @@ command is used instead. + .BR subscriptions.conf (5), + CUPS Online Help (http://localhost:631/help) + .SH COPYRIGHT +-Copyright \[co] 2020-2024 by OpenPrinting. ++Copyright \[co] 2020-2025 by OpenPrinting. +diff --git a/scheduler/auth.c b/scheduler/auth.c +index 3c9aa72aa..bd0d28a0e 100644 +--- a/scheduler/auth.c ++++ b/scheduler/auth.c +@@ -398,7 +398,7 @@ cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ + } + #endif /* HAVE_AUTHORIZATION_H */ + #if defined(SO_PEERCRED) && defined(AF_LOCAL) +- else if (!strncmp(authorization, "PeerCred ", 9) && ++ else if (PeerCred != CUPSD_PEERCRED_OFF && !strncmp(authorization, "PeerCred ", 9) && + con->http->hostaddr->addr.sa_family == AF_LOCAL && con->best) + { + /* +@@ -441,6 +441,12 @@ cupsdAuthorize(cupsd_client_t *con) /* I - Client connection */ + } + #endif /* HAVE_AUTHORIZATION_H */ + ++ if ((PeerCred == CUPSD_PEERCRED_ROOTONLY || httpGetState(con->http) == HTTP_STATE_PUT_RECV) && strcmp(authorization + 9, "root")) ++ { ++ cupsdLogClient(con, CUPSD_LOG_INFO, "User \"%s\" is not allowed to use peer credentials.", authorization + 9); ++ return; ++ } ++ + if ((pwd = getpwnam(authorization + 9)) == NULL) + { + cupsdLogClient(con, CUPSD_LOG_ERROR, "User \"%s\" does not exist.", authorization + 9); +diff --git a/scheduler/auth.h b/scheduler/auth.h +index ee98e92c7..fdf71213f 100644 +--- a/scheduler/auth.h ++++ b/scheduler/auth.h +@@ -50,6 +50,10 @@ + #define CUPSD_AUTH_LIMIT_ALL 127 /* Limit all requests */ + #define CUPSD_AUTH_LIMIT_IPP 128 /* Limit IPP requests */ + ++#define CUPSD_PEERCRED_OFF 0 /* Don't allow PeerCred authorization */ ++#define CUPSD_PEERCRED_ON 1 /* Allow PeerCred authorization for all users */ ++#define CUPSD_PEERCRED_ROOTONLY 2 /* Allow PeerCred authorization for root user */ ++ + #define IPP_ANY_OPERATION (ipp_op_t)0 + /* Any IPP operation */ + #define IPP_BAD_OPERATION (ipp_op_t)-1 +@@ -105,6 +109,9 @@ typedef struct + + VAR cups_array_t *Locations VALUE(NULL); + /* Authorization locations */ ++VAR int PeerCred VALUE(CUPSD_PEERCRED_ON); ++ /* Allow PeerCred authorization? */ ++ + #ifdef HAVE_TLS + VAR http_encryption_t DefaultEncryption VALUE(HTTP_ENCRYPT_REQUIRED); + /* Default encryption for authentication */ +diff --git a/scheduler/client.c b/scheduler/client.c +index d495d9a75..81db4aa52 100644 +--- a/scheduler/client.c ++++ b/scheduler/client.c +@@ -2204,7 +2204,7 @@ cupsdSendHeader( + auth_size = sizeof(auth_str) - (size_t)(auth_key - auth_str); + + #if defined(SO_PEERCRED) && defined(AF_LOCAL) +- if (httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL) ++ if (PeerCred != CUPSD_PEERCRED_OFF && httpAddrFamily(httpGetAddress(con->http)) == AF_LOCAL) + { + strlcpy(auth_key, ", PeerCred", auth_size); + auth_key += 10; +diff --git a/scheduler/conf.c b/scheduler/conf.c +index 3184d72f0..6accf0590 100644 +--- a/scheduler/conf.c ++++ b/scheduler/conf.c +@@ -47,6 +47,7 @@ typedef enum + { + CUPSD_VARTYPE_INTEGER, /* Integer option */ + CUPSD_VARTYPE_TIME, /* Time interval option */ ++ CUPSD_VARTYPE_NULLSTRING, /* String option or NULL/empty string */ + CUPSD_VARTYPE_STRING, /* String option */ + CUPSD_VARTYPE_BOOLEAN, /* Boolean option */ + CUPSD_VARTYPE_PATHNAME, /* File/directory name option */ +@@ -69,7 +70,7 @@ static const cupsd_var_t cupsd_vars[] = + { + { "AutoPurgeJobs", &JobAutoPurge, CUPSD_VARTYPE_BOOLEAN }, + #ifdef HAVE_DNSSD +- { "BrowseDNSSDSubTypes", &DNSSDSubTypes, CUPSD_VARTYPE_STRING }, ++ { "BrowseDNSSDSubTypes", &DNSSDSubTypes, CUPSD_VARTYPE_NULLSTRING }, + #endif /* HAVE_DNSSD */ + { "BrowseWebIF", &BrowseWebIF, CUPSD_VARTYPE_BOOLEAN }, + { "Browsing", &Browsing, CUPSD_VARTYPE_BOOLEAN }, +@@ -120,7 +121,7 @@ static const cupsd_var_t cupsd_vars[] = + { "MaxSubscriptionsPerPrinter",&MaxSubscriptionsPerPrinter, CUPSD_VARTYPE_INTEGER }, + { "MaxSubscriptionsPerUser", &MaxSubscriptionsPerUser, CUPSD_VARTYPE_INTEGER }, + { "MultipleOperationTimeout", &MultipleOperationTimeout, CUPSD_VARTYPE_TIME }, +- { "PageLogFormat", &PageLogFormat, CUPSD_VARTYPE_STRING }, ++ { "PageLogFormat", &PageLogFormat, CUPSD_VARTYPE_NULLSTRING }, + { "PreserveJobFiles", &JobFiles, CUPSD_VARTYPE_TIME }, + { "PreserveJobHistory", &JobHistory, CUPSD_VARTYPE_TIME }, + { "ReloadTimeout", &ReloadTimeout, CUPSD_VARTYPE_TIME }, +@@ -791,6 +792,13 @@ cupsdReadConfiguration(void) + IdleExitTimeout = 60; + #endif /* HAVE_ONDEMAND */ + ++ if (!strcmp(CUPS_DEFAULT_PEER_CRED, "off")) ++ PeerCred = CUPSD_PEERCRED_OFF; ++ else if (!strcmp(CUPS_DEFAULT_PEER_CRED, "root-only")) ++ PeerCred = CUPSD_PEERCRED_ROOTONLY; ++ else ++ PeerCred = CUPSD_PEERCRED_ON; ++ + /* + * Setup environment variables... + */ +@@ -1831,7 +1839,7 @@ get_addr_and_mask(const char *value, /* I - String from config file */ + + family = AF_INET6; + +- for (i = 0, ptr = value + 1; *ptr && i < 8; i ++) ++ for (i = 0, ptr = value + 1; *ptr && i >= 0 && i < 8; i ++) + { + if (*ptr == ']') + break; +@@ -1977,7 +1985,7 @@ get_addr_and_mask(const char *value, /* I - String from config file */ + #ifdef AF_INET6 + if (family == AF_INET6) + { +- if (i > 128) ++ if (i < 0 || i > 128) + return (0); + + i = 128 - i; +@@ -2011,7 +2019,7 @@ get_addr_and_mask(const char *value, /* I - String from config file */ + else + #endif /* AF_INET6 */ + { +- if (i > 32) ++ if (i < 0 || i > 32) + return (0); + + mask[0] = 0xffffffff; +@@ -2921,7 +2929,17 @@ parse_variable( + cupsdSetString((char **)var->ptr, temp); + break; + ++ case CUPSD_VARTYPE_NULLSTRING : ++ cupsdSetString((char **)var->ptr, value); ++ break; ++ + case CUPSD_VARTYPE_STRING : ++ if (!value) ++ { ++ cupsdLogMessage(CUPSD_LOG_ERROR, "Missing value for %s on line %d of %s.", line, linenum, filename); ++ return (0); ++ } ++ + cupsdSetString((char **)var->ptr, value); + break; + } +@@ -3436,9 +3454,10 @@ read_cupsd_conf(cups_file_t *fp) /* I - File to read from */ + line, value ? " " : "", value ? value : "", linenum, + ConfigurationFile, CupsFilesFile); + } +- else +- parse_variable(ConfigurationFile, linenum, line, value, +- sizeof(cupsd_vars) / sizeof(cupsd_vars[0]), cupsd_vars); ++ else if (!parse_variable(ConfigurationFile, linenum, line, value, ++ sizeof(cupsd_vars) / sizeof(cupsd_vars[0]), cupsd_vars) && ++ (FatalErrors & CUPSD_FATAL_CONFIG)) ++ return (0); + } + + return (1); +@@ -3597,6 +3616,31 @@ read_cups_files_conf(cups_file_t *fp) /* I - File to read from */ + break; + } + } ++ else if (!_cups_strcasecmp(line, "PeerCred") && value) ++ { ++ /* ++ * PeerCred {off,on,root-only} ++ */ ++ ++ if (!_cups_strcasecmp(value, "off")) ++ { ++ PeerCred = CUPSD_PEERCRED_OFF; ++ } ++ else if (!_cups_strcasecmp(value, "on")) ++ { ++ PeerCred = CUPSD_PEERCRED_ON; ++ } ++ else if (!_cups_strcasecmp(value, "root-only")) ++ { ++ PeerCred = CUPSD_PEERCRED_ROOTONLY; ++ } ++ else ++ { ++ cupsdLogMessage(CUPSD_LOG_ERROR, "Unknown PeerCred \"%s\" on line %d of %s.", value, linenum, CupsFilesFile); ++ if (FatalErrors & CUPSD_FATAL_CONFIG) ++ return (0); ++ } ++ } + else if (!_cups_strcasecmp(line, "PrintcapFormat") && value) + { + /* +diff --git a/test/run-stp-tests.sh b/test/run-stp-tests.sh +index 39b53c3e4..2089f7944 100755 +--- a/test/run-stp-tests.sh ++++ b/test/run-stp-tests.sh +@@ -512,7 +512,7 @@ fi + + cat >$BASE/cups-files.conf <