{"id":"CVE-2023-4504","aliases":["ALPINE-CVE-2023-4504","AZL-37075","AZL-37100","BELL-CVE-2023-4504","CLSA-2023-1697575950","CLSA-2023-1697576053","CLSA-2024-1720178510","CLSA-2025-1758743212","CLSA-2025-1758796854","CLSA-2025-1759329269","CLSA-2025-1759332650","CLSA-2026-1777462768","CLSA-2026-1777540724","DEBIAN-CVE-2023-4504","DLA-3594-1","EUVD-2023-54359","MGASA-2023-0284","OESA-2023-1703","OESA-2023-1704","OESA-2023-1705","OESA-2023-1734","OESA-2023-1752","SUSE-SU-2023:3706-1","SUSE-SU-2023:3707-1","SUSE-SU-2023:3707-2","SUSE-SU-2025:20090-1","UBUNTU-CVE-2023-4504","USN-6391-1","USN-6391-2","openSUSE-SU-2024:13250-1"],"status":"published","title":"OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","severity":{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00637,"percentile":0.50836,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-122","CWE-787"],"published":"2023-09-20T12:00:00Z","modified":"2026-10-28T02:31:05Z","exploits":[{"source":"pocgithub","id":"djjohnson565/CUPS-Exploit","title":"djjohnson565/CUPS-Exploit","date":"2025-05-08","url":"https://github.com/djjohnson565/CUPS-Exploit"}],"fixes":[{"ecosystem":"Alpine:v3.17","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"cups","fixed_in":["2.4.7-r0"],"sources":["osv"]},{"ecosystem":"Azure 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This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-21T23:15:12.293Z","modified":"2026-10-26T17:17:58.645184455Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:49.709457Z"},{"id":"AZL-37075","title":"CVE-2023-4504 affecting package cups for versions less than 2.3.3op2-7","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-21T23:15:12Z","modified":"2026-04-21T04:28:09.597945Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:04.608733Z"},{"id":"AZL-37100","title":"CVE-2023-4504 affecting package cups for versions less than 2.4.10-1","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-21T23:15:12Z","modified":"2026-04-21T04:55:32.610345Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:04.608733Z"},{"id":"BELL-CVE-2023-4504","status":"published","published":"2023-09-21T23:15:00Z","modified":"2026-01-26T09:35:31.632295Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:17.742221Z"},{"id":"CVE-2023-4504","title":"OpenPrinting CUPS/libppd Postscript Parsing Heap Overflow","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-21T22:47:41.879Z","modified":"2026-10-28T02:31:05.273147812Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T15:44:33.792101Z"},{"id":"DEBIAN-CVE-2023-4504","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-21T23:15:12.293Z","modified":"2026-10-26T18:03:06.746608226Z","cvss":[{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:40.275853Z"},{"id":"OESA-2023-1703","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers..\r\n\r\nSecurity Fix(es):\r\n\r\nDue to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.\n(CVE-2023-4504)","status":"published","published":"2023-09-28T11:06:09Z","modified":"2026-08-18T01:17:54.271251003Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1704","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers..\r\n\r\nSecurity Fix(es):\r\n\r\nDue to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.\n(CVE-2023-4504)","status":"published","published":"2023-09-28T11:06:09Z","modified":"2026-08-18T01:17:54.575184004Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1705","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers..\r\n\r\nSecurity Fix(es):\r\n\r\nDue to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.\n(CVE-2023-4504)","status":"published","published":"2023-09-28T11:06:09Z","modified":"2026-08-18T01:17:54.544534236Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1734","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers..\r\n\r\nSecurity Fix(es):\r\n\r\nDue to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.\n(CVE-2023-4504)","status":"published","published":"2023-10-13T11:06:11Z","modified":"2026-08-18T01:17:55.091480422Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"OESA-2023-1752","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers..\r\n\r\nSecurity Fix(es):\r\n\r\nDue to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.\n(CVE-2023-4504)","status":"published","published":"2023-10-20T11:06:12Z","modified":"2026-08-18T01:17:55.347178193Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.328856Z"},{"id":"UBUNTU-CVE-2023-4504","description":"Due to failure in validating the length provided by an attacker-crafted PPD PostScript document, CUPS and libppd are susceptible to a heap-based buffer overflow and possibly code execution. This issue has been fixed in CUPS version 2.4.7, released in September of 2023.","status":"published","published":"2023-09-20T12:00:00Z","modified":"2026-04-22T14:13:00.425244Z","cvss":[{"version":"3.1","score":0,"vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:N","level":"none"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":7,"vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:22.741943Z"},{"id":"CLSA-2023-1697575950","title":"Fix CVE(s): CVE-2023-4504","description":"\n   * SECURITY UPDATE: heap-based buffer overflow\n     - debian/patches/CVE-2023-4504.patch: check for end of buffer if\n       there is an escaped character\n     - CVE-2023-4504","status":"published","published":"2023-10-17T20:52:34Z","modified":"2026-06-04T10:03:16.223689Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2023-1697576053","title":"Fix CVE(s): CVE-2023-4504","description":"\n   * SECURITY UPDATE: heap-based buffer overflow\n     - debian/patches/CVE-2023-4504.patch: check for end of buffer if\n       there is an escaped character\n     - CVE-2023-4504","status":"published","published":"2023-10-17T20:54:17Z","modified":"2026-06-04T10:03:59.111671Z","updated_at":"2026-11-02T15:43:40.509998Z"},{"id":"CLSA-2024-1720178510","title":"cups: Fix of CVE-2023-4504","description":"- CVE-2023-4504: scan_ps(): check for null terminator after backslash character","status":"published","published":"2024-07-05T11:21:53Z","modified":"2026-06-01T00:33:17.549337019Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2025-1758743212","title":"cups: Fix of CVE-2023-4504","description":"- CVE-2023-4504: check for null terminator after a backslash","status":"published","published":"2025-09-24T19:46:55Z","modified":"2026-06-01T00:33:25.859311632Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1758796854","title":"cups: Fix of CVE-2023-4504","description":"- CVE-2023-4504: check for null terminator after a backslash","status":"published","published":"2025-09-25T10:40:57Z","modified":"2026-06-01T00:33:16.537160217Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1759329269","title":"cups: Fix of 2 CVEs","description":"- CVE-2023-4504: validate length of attacker-crafted PPD PostScript documents to\n  prevent heap-based buffer overflow and possible code execution\n- CVE-2025-58060: fix authentication bypass issue caused by not checking\n  password when AuthType is not Basic.","status":"published","published":"2025-10-01T14:34:46Z","modified":"2026-06-01T00:32:01.144840996Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2025-1759332650","title":"cups: Fix of 2 CVEs","description":"- CVE-2023-4504: validate length of attacker-crafted PPD PostScript documents to\n  prevent heap-based buffer overflow and possible code execution\n- CVE-2025-58060: fix authentication bypass issue caused by not checking\n  password when AuthType is not Basic.","status":"published","published":"2025-10-01T15:30:57Z","modified":"2026-06-01T00:33:14.577124298Z","updated_at":"2026-11-02T15:43:42.427288Z"},{"id":"CLSA-2026-1777462768","title":"cups: Fix of CVE-2023-4504","description":"- CVE-2023-4504: validate PPD PostScript input length to prevent heap-based\n  buffer overflow in raster-interpret.c","status":"published","published":"2026-04-29T14:23:05Z","modified":"2026-06-01T00:32:49.867741965Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"CLSA-2026-1777540724","title":"cups: Fix of CVE-2023-4504","description":"- CVE-2023-4504: fix heap-based buffer overflow in cups raster-interpret\n  PPD PostScript scanner; scan_ps() in filter/interpret.c now returns\n  NULL on a lone trailing backslash escape sequence rather than reading\n  past the buffer terminator","status":"published","published":"2026-04-30T09:18:50Z","modified":"2026-06-01T00:33:14.397095705Z","updated_at":"2026-11-02T15:43:44.384419Z"},{"id":"DLA-3594-1","title":"cups - security update","status":"published","published":"2023-09-30T00:00:00Z","modified":"2026-03-09T01:17:53.534093Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"MGASA-2023-0284","title":"Updated cups packages fix security vulnerabilities","description":"The updated packages fix security vulnerabilities:\n\nIt was discovered that CUPS incorrectly authenticated certain remote\nrequests. A remote attacker could possibly use this issue to obtain\nrecently printed documents. (CVE-2023-32360)\n\nDue to failure in validating the length provided by an attacker-crafted\nPPD PostScript document, CUPS and libppd are susceptible to a heap-based\nbuffer overflow and possibly code execution. (CVE-2023-4504)\n","status":"published","published":"2023-10-10T17:21:41Z","modified":"2026-05-30T05:15:06.102420066Z","updated_at":"2026-11-02T15:49:42.263076Z"},{"id":"openSUSE-SU-2024:13250-1","title":"cups-2.4.2-7.1 on GA media","description":"These are all security issues fixed in the cups-2.4.2-7.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:57:26.368085Z","updated_at":"2026-11-02T16:58:36.025801Z"},{"id":"SUSE-SU-2023:3706-1","title":"Security update for cups","description":"This update for cups fixes the following issues:\n\n- CVE-2023-4504: Fixed heap overflow in OpenPrinting CUPS Postscript Parsing (bsc#1215204).\n- CVE-2023-34241: Fixed a use-after-free problem in cupsdAcceptClient() (bsc#1212230).\n- CVE-2023-32360: Fixed information leak through Cups-Get-Document operation (bsc#1214254).\n","status":"published","published":"2023-09-20T15:09:35Z","modified":"2026-02-04T03:43:11.046462Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3707-1","title":"Security update for cups","description":"This update for cups fixes the following issues:\n\n- CVE-2023-4504: Fixed heap overflow in OpenPrinting CUPS Postscript Parsing (bsc#1215204).\n- CVE-2023-32360: Fixed Information leak through Cups-Get-Document operation (bsc#1214254).\n","status":"published","published":"2023-09-20T15:12:50Z","modified":"2026-02-04T02:49:19.287872Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2023:3707-2","title":"Security update for cups","description":"This update for cups fixes the following issues:\n\n- CVE-2023-4504: Fixed heap overflow in OpenPrinting CUPS Postscript Parsing (bsc#1215204).\n- CVE-2023-32360: Fixed Information leak through Cups-Get-Document operation (bsc#1214254).\n","status":"published","published":"2023-10-18T19:33:41Z","modified":"2026-02-04T04:30:26.72649Z","updated_at":"2026-11-02T15:53:53.440387Z"},{"id":"SUSE-SU-2025:20090-1","title":"Security update for cups","description":"This update for cups fixes the following issues:\n\n- Version upgrade to 2.4.11:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.11 brings several bug fixes regarding IPP response\n  validation, processing PPD values, Web UI support\n  (checkbox support, modifying printers) and others fixes.\n  Detailed list (from CHANGES.md):\n  * Updated the maximum file descriptor limit\n    for `cupsd` to 64k-1 (Issue #989)\n  * Fixed `lpoptions -d` with a discovered\n    but not added printer (Issue #833)\n  * Fixed incorrect error message for HTTP/IPP errors (Issue #893)\n  * Fixed JobPrivateAccess and SubscriptionPrivateAccess support\n    for \"all\" (Issue #990)\n  * Fixed issues with cupsGetDestMediaByXxx (Issue #993)\n  * Fixed adding and modifying of printers\n    via the web interface (Issue #998)\n  * Fixed HTTP PeerCred authentication\n    for domain users (Issue #1001)\n  * Fixed checkbox support (Issue #1008)\n  * Fixed printer state notifications (Issue #1013)\n  * Fixed IPP Everywhere printer setup (Issue #1033)\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n  In particular CUPS 2.4.11 contains those commit regarding\n  IPP response validation and processing PPD values:\n  * \"Quote PPD localized strings\"\n    https://github.com/OpenPrinting/cups/commit/1e6ca5913eceee906038bc04cc7ccfbe2923bdfd\n    plus a cleanup to \"Fix warnings for unused vars\"\n    https://github.com/OpenPrinting/cups/commit/2abe1ba8a66864aa82cd9836b37e57103b8e1a3b\n\n- Version upgrade to 2.4.10:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.10 brings two fixes:\n  * Fixed error handling when reading a mixed 1setOf attribute.\n  * Fixed scheduler start if there is only domain socket\n    to listen on (Issue #985) which is fix for regression\n    after fix for CVE-2024-35235 in scenarios where is\n    no other listeners in cupsd.conf than domain socket\n    created on demand by systemd, launchd or upstart.\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n- Version upgrade to 2.4.9:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.9 brings security fix for CVE-2024-35235 and\n  several bug fixes regarding CUPS Web User Interface,\n  PPD generation and HTTP protocol implementation.\n  Detailed list (from CHANGES.md):\n  * Fixed domain socket handling (CVE-2024-35235)\n  * Fixed creating of `cupsUrfSupported` PPD keyword\n    (Issue #952)\n  * Fixed searching for destinations in web ui (Issue #954)\n  * Fixed TLS negotiation using OpenSSL with servers\n    that require the TLS SNI extension.\n  * Really raised `cups_enum_dests()` timeout for listing\n    available IPP printers (Issue #751)...\n  * Fixed `Host` header regression (Issue #967)\n  * Fixed DNS-SD lookups of local services with Avahi\n    (Issue #970)\n  * Fixed listing jobs in destinations in web ui.\n    (Apple issue #6204)\n  * Fixed showing search query in web ui help page.\n    (Issue #977)\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n  Apple issues are those at https://github.com/apple/cups/issues\n\n- Update to version 2.4.8:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.8 brings many bug fixes which aggregated over the last\n  half a year. It brings the important fix for race conditions\n  and errors which can happen when installing permanent\n  IPP Everywhere printer, support for PAM modules password-auth\n  and system-auth and new option for lpstat which can show only\n  the successful jobs.\n  Detailed list (from CHANGES.md):\n  * Added warning if the device has to be asked for\n    'all,media-col-database' separately (Issue #829)\n  * Added new value for 'lpstat' option '-W' - successfull - for\n    getting successfully printed jobs (Issue #830)\n  * Added support for PAM modules password-auth\n    and system-auth (Issue #892)\n  * Updated IPP Everywhere printer creation error\n    reporting (Issue #347)\n  * Updated and documented the MIME typing buffering\n    limit (Issue #925)\n  * Raised 'cups_enum_dests()' timeout for listing\n    available IPP printers (Issue #751)\n  * Now report an error for temporary printer defaults\n    with lpadmin (Issue #237)\n  * Fixed mapping of PPD InputSlot, MediaType,\n    and OutputBin values (Issue #238)\n  * Fixed \"document-unprintable-error\" handling (Issue #391)\n  * Fixed the web interface not showing an error\n    for a non-existent printer (Issue #423)\n  * Fixed printing of jobs with job name longer than 255 chars\n    on older printers (Issue #644)\n  * Really backported fix for Issue #742\n  * Fixed 'cupsCopyDestInfo' device connection\n    detection (Issue #586)\n  * Fixed \"Upgrade\" header handling when there is\n    no TLS support (Issue #775)\n  * Fixed memory leak when unloading a job (Issue #813)\n  * Fixed memory leak when creating color profiles (Issue #815)\n  * Fixed a punch finishing bug in the IPP Everywhere\n    support (Issue #821)\n  * Fixed crash in 'scan_ps()' if incoming argument\n    is NULL (Issue #831)\n  * Fixed setting job state reasons for successful\n    jobs (Issue #832)\n  * Fixed infinite loop in IPP backend if hostname\n    is IP address with Kerberos (Issue #838)\n  * Added additional check on socket if 'revents' from 'poll()'\n    returns POLLHUP together with POLLIN or POLLOUT\n    in 'httpAddrConnect2()' (Issue #839)\n  * Fixed crash in 'ppdEmitString()' if 'size' is NULL (Issue #850)\n  * Fixed reporting 'media-source-supported' when\n    sharing printer  which has numbers as strings instead of\n    keywords as 'InputSlot' values (Issue #859)\n  * Fixed IPP backend to support the \"print-scaling\" option\n    with IPP printers (Issue #862)\n  * Fixed potential race condition for the creation\n    of temporary queues (Issue #871)\n  * Fixed 'httpGets' timeout handling (Issue #879)\n  * Fixed checking for required attributes during\n    PPD generation (Issue #890)\n  * Fixed encoding of IPv6 addresses in HTTP requests (Issue #903)\n  * Fixed sending response headers to client (Issue #927)\n  * Fixed CGI program initialization and validation\n    of form checkbox and text fields.\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n\n- Version upgrade to 2.4.7:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.7 is released to ship the fix for CVE-2023-4504\n  and several other changes, among them it is\n  adding OpenSSL support for cupsHashData function and bug fixes.\n  Detailed list:\n  * CVE-2023-4504 - Fixed Heap-based buffer overflow when\n    reading Postscript in PPD files\n  * Added OpenSSL support for cupsHashData (Issue #762)\n  * Fixed delays in lpd backend (Issue #741)\n  * Fixed extensive logging in scheduler (Issue #604)\n  * Fixed hanging of lpstat on IBM AIX (Issue #773)\n  * Fixed hanging of lpstat on Solaris (Issue #156)\n  * Fixed printing to stderr if we can't open cups-files.conf\n    (Issue #777)\n  * Fixed purging job files via cancel -x (Issue #742)\n  * Fixed RFC 1179 port reserving behavior in LPD backend\n    (Issue #743)\n  * Fixed a bug in the PPD command interpretation code\n    (Issue #768)\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n- Version upgrade to 2.4.6:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.6 is released to ship the fix for CVE-2023-34241\n  and two other bug fixes.\n  Detailed list:\n  * Fix linking error on old MacOS (Issue #715)\n  * Fix printing multiple files on specific printers (Issue #643)\n  * Fix use-after-free when logging warnings in case of failures\n    in cupsdAcceptClient() (fixes CVE-2023-34241)\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n- Version upgrade to 2.4.5:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.5 is a hotfix release for a bug which corrupted\n  locally saved certificates, which broke secured printing\n  via TLS after the first print job.\n- Version upgrade to 2.4.4:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.4 release is created as a hotfix for segfault\n  in cupsGetNamedDest(), when caller tries to find\n  the default destination and the default destination\n  is not set on the machine.\n- Version upgrade to 2.4.3:\n  See https://github.com/openprinting/cups/releases\n  CUPS 2.4.3 brings fix for CVE-2023-32324, several improvements\n  and many bug fixes. CUPS now implements fallback for printers\n  with broken firmware, which is not capable of answering\n  to IPP request get-printer-attributes with all,\n  media-col-database - this enables driverless support for\n  bunch of printers which don't follow IPP Everywhere standard.\n  Aside from the CVE fix the most important fixes are around color\n  settings, printer application support fixes and OpenSSL support.\n  Detailed list of changes:\n  * Added a title with device uri for found network printers\n    (Issues #402, #393)\n  * Added new media sizes defined by IANA (Issues #501)\n  * Added quirk for GoDEX label printers (Issue #440)\n  * Fixed --enable-libtool-unsupported (Issue #394)\n  * Fixed configuration on RISC-V machines (Issue #404)\n  * Fixed the device_uri invalid pointer for driverless printers\n    with .local hostname (Issue #419)\n  * Fixed an OpenSSL crash bug (Issue #409)\n  * Fixed a potential SNMP OID value overflow issue (Issue #431)\n  * Fixed an OpenSSL certificate loading issue (Issue #465)\n  * Fixed Brazilian Portuguese translations (Issue #288)\n  * Fixed cupsd default keychain location when building\n    with OpenSSL (Issue #529)\n  * Fixed default color settings for CMYK printers as well\n    (Issue #500)\n  * Fixed duplicate PPD2IPP media-type names (Issue #688)\n  * Fixed possible heap buffer overflow in _cups_strlcpy()\n    (fixes CVE-2023-32324)\n  * Fixed InputSlot heuristic for photo sizes smaller than 5x7\"\n    if there is no media-source in the request (Issue #569)\n  * Fixed invalid memory access during generating IPP Everywhere\n    queue (Issue #466)\n  * Fixed lprm if no destination is provided (Issue #457)\n  * Fixed memory leaks in create_local_bg_thread() (Issue #466)\n  * Fixed media size tolerance in ippeveprinter (Issue #487)\n  * Fixed passing command name without path into ippeveprinter\n    (Issue #629)\n  * Fixed saving strings file path in printers.conf (Issue #710)\n  * Fixed TLS certificate generation bugs (Issue #652)\n  * ippDeleteValues would not delete the last value (Issue #556)\n  * Ignore some of IPP defaults if the application sends\n    its PPD alternative (Issue #484)\n  * Make Letter the default size in ippevepcl (Issue #543)\n  * Now accessing Admin page in Web UI requires authentication\n    (Issue #518)\n  * Now look for default printer on network if needed (Issue #452)\n  * Now we poll media-col-database separately if we fail at first\n    (Issue #599)\n  * Now report fax attributes and values as needed (Issue #459)\n  * Now localize HTTP responses using the Content-Language value\n    (Issue #426)\n  * Raised file size limit for importing PPD via Web UI\n    (Issue #433)\n  * Raised maximum listen backlog size to INT MAX (Issue #626)\n  * Update print-color-mode if the printer is modified\n    via ColorModel PPD option (Issue #451)\n  * Use localhost when printing via printer application\n    (Issue #353)\n  * Write defaults into /etc/cups/lpoptions if we're root\n    (Issue #456)\n  Issues are those at https://github.com/OpenPrinting/cups/issues\n","status":"published","published":"2025-02-03T09:10:07Z","modified":"2026-03-23T04:50:03.7074Z","updated_at":"2026-11-02T15:53:59.381172Z"},{"id":"USN-6391-1","title":"cups vulnerability","description":"It was discovered that CUPS incorrectly parsed certain Postscript objects.\nIf a user or automated system were tricked into printing a specially\ncrafted document, a remote attacker could use this issue to cause CUPS to\ncrash, resulting in a denial of service, or possibly execute arbitrary\ncode.\n","status":"published","published":"2023-09-20T14:17:48Z","modified":"2026-04-27T16:52:30.183121Z","updated_at":"2026-11-02T16:58:17.305935Z"},{"id":"USN-6391-2","title":"cups vulnerability","description":"USN-6391-1 fixed a vulnerability in CUPS. This update provides\nthe corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that CUPS incorrectly parsed certain Postscript objects.\n If a user or automated system were tricked into printing a specially\n crafted document, a remote attacker could use this issue to cause CUPS to\n crash, resulting in a denial of service, or possibly execute arbitrary\n code.\n","status":"published","published":"2023-09-21T14:09:04Z","modified":"2026-06-25T13:32:21.551331441Z","updated_at":"2026-11-02T16:58:17.305935Z"}]}}