{"id":"CVE-2023-49286","aliases":["ALPINE-CVE-2023-49286","ALSA-2024:0046","ALSA-2024:0071","AZL-32074","CLSA-2023-1703181485","CLSA-2023-1703182573","CLSA-2023-1703183242","CLSA-2023-1703183411","CLSA-2023-1703184036","CLSA-2023-1703184171","CLSA-2023-1703184270","CLSA-2023-1703184336","CLSA-2025-1736503631","DEBIAN-CVE-2023-49286","DLA-3709-1","DSA-5637-1","EUVD-2023-53279","GHSA-xggx-9329-3c27","MGASA-2024-0102","OESA-2023-1932","RHSA-2024:0046","RHSA-2024:0071","RHSA-2024:0072","RHSA-2024:0397","RHSA-2024:0771","RHSA-2024:0772","RHSA-2024:0773","RHSA-2024:1153","RHSA-2024:1787","RLSA-2024:0046","ROOT-OS-ALPINE-318-CVE-2023-49286","SUSE-SU-2023:4698-1","SUSE-SU-2023:4724-1","SUSE-SU-2023:4825-1","UBUNTU-CVE-2023-49286","USN-6594-1","USN-6857-1","openSUSE-SU-2024:13631-1"],"status":"published","title":"Denial of Service in Helper Process management","description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. 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There are no known workarounds for this vulnerability.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.10352,"percentile":0.95749,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-253","CWE-617","CWE-754"],"published":"2023-12-04T22:53:44Z","modified":"2026-10-29T11:31:37Z","fixes":[{"ecosystem":"Alpine:v3.19","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"squid","fixed_in":["6.5-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"squid","fixed_in":["5.7-2+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"squid","fixed_in":["6.5-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"squid","fixed_in":["6.5-1"],"sources":["osv"]},{"ecosystem":"Root:Alpine:3.18","package":"squid","fixed_in":["5.9-r00071","5.9-r00074","5.9-r00073","5.9-r00072","5.9-r00075"],"sources":["osv"]},{"ecosystem":"Root:Alpine:3.18","package":"rootio-squid","fixed_in":["5.9-r00071","5.9-r00074","5.9-r00073","5.9-r00072","5.9-r00075"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:16.04:LTS","package":"squid3","fixed_in":["3.5.12-1ubuntu7.16+esm3"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"squid3","fixed_in":["3.5.27-1ubuntu1.14+esm2"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"squid","fixed_in":["4.10-1ubuntu1.9"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"squid","fixed_in":["5.7-0ubuntu0.22.04.3"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"squid","fixed_in":["6.5-1ubuntu1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.19","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.5-r0"}]}]},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+2741+01592ae8"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+3048+383bc947"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+2741+01592ae8"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"libecap-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-2.module_el8.6.0+3048+383bc947"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:4.15-7.module_el8.9.0+3708+6acaac63.5"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:9","package":"squid","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7:5.5-6.el9_3.5"}]}],"bundled":4},{"source":"osv","ecosystem":"Azure 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There are no known workarounds for this vulnerability.","status":"published","published":"2023-12-04T23:15:27.243Z","modified":"2026-10-26T17:17:58.655381072Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:27:49.709457Z"},{"id":"AZL-32074","title":"CVE-2023-49286 affecting package squid 5.7-5","description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.","status":"published","published":"2023-12-04T23:15:27Z","modified":"2026-04-21T04:26:39.159145Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:28:03.46006Z"},{"id":"CVE-2023-49286","title":"Denial of Service in Helper Process management","description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.","status":"published","published":"2023-12-04T22:53:44.827Z","modified":"2026-10-28T10:35:32.342296974Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-253","CWE-617"],"updated_at":"2026-11-02T15:44:34.72355Z"},{"id":"DEBIAN-CVE-2023-49286","description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.","status":"published","published":"2023-12-04T23:15:27.243Z","modified":"2026-10-26T18:02:50.131545068Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:40.275853Z"},{"id":"OESA-2023-1932","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\r\n\r\nSquid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-49285)\r\n\r\nSquid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.(CVE-2023-49286)","status":"published","published":"2023-12-15T11:06:22Z","modified":"2026-08-18T01:18:05.709537255Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:40.71472Z"},{"id":"RHSA-2024:0046","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:10:30Z","modified":"2026-06-26T11:10:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0071","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T16:10:48Z","modified":"2026-06-26T11:10:18Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0072","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T16:10:39Z","modified":"2026-07-12T10:02:22Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0397","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:10:57Z","modified":"2026-07-12T10:02:23Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0771","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:27Z","modified":"2026-07-12T10:02:24Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0772","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:18Z","modified":"2026-07-12T10:02:25Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:0773","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2024-09-16T16:11:08Z","modified":"2026-07-12T10:02:25Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.270484Z"},{"id":"RHSA-2024:1153","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T16:11:50Z","modified":"2026-07-12T10:02:31Z","cvss":[{"version":"3.1","score":8.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L","level":"high"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RHSA-2024:1787","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2024-09-16T18:00:54Z","modified":"2026-06-26T11:13:34Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"RLSA-2024:0046","title":"Important: squid:4 security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)\n\n* squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)\n\n* squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)\n\n* squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2024-01-09T04:07:10.107611Z","modified":"2026-02-05T03:15:11.774065Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:24.63379Z"},{"id":"UBUNTU-CVE-2023-49286","description":"Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to an Incorrect Check of Function Return Value bug Squid is vulnerable to a Denial of Service attack against its Helper process management. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.","status":"published","published":"2023-12-04T23:15:00Z","modified":"2026-02-04T04:32:13.695762Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:54:23.935133Z"},{"id":"ALSA-2024:0046","title":"Important: squid:4 security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)\n* squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)\n* squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)\n* squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2024-01-03T00:00:00Z","modified":"2026-10-29T11:02:19.286104782Z","updated_at":"2026-11-02T15:27:52.091404Z"},{"id":"ALSA-2024:0071","title":"Important: squid security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Denial of Service in SSL Certificate validation (CVE-2023-46724)\n* squid: NULL pointer dereference in the gopher protocol code (CVE-2023-46728)\n* squid: Buffer over-read in the HTTP Message processing feature (CVE-2023-49285)\n* squid: Incorrect Check of Function Return Value In Helper Process management (CVE-2023-49286)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2024-01-08T00:00:00Z","modified":"2026-10-29T11:31:37.681289059Z","updated_at":"2026-11-02T15:27:52.091404Z"},{"id":"CLSA-2023-1703181485","title":"squid: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T17:58:09Z","modified":"2026-06-01T00:32:26.639363573Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703182573","title":"squid: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T18:16:17Z","modified":"2026-06-01T00:33:22.050552953Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703183242","title":"squid34: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T18:27:26Z","modified":"2026-06-01T00:32:50.809447579Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703183411","title":"squid: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T18:30:15Z","modified":"2026-06-01T00:32:50.812465077Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703184036","title":"squid34: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T18:40:40Z","modified":"2026-06-01T00:33:25.071775083Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703184171","title":"squid: Fix of 2 CVEs","description":"- CVE-2023-49285: Fix date parsing in RFC 1123 to prevent Buffer OverRead\n- CVE-2023-49286: Fix DoS attack against Helper process management","status":"published","published":"2023-12-21T18:42:55Z","modified":"2026-06-01T00:33:25.092498026Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703184270","title":"Fix CVE(s): CVE-2023-49285, CVE-2023-49286","description":"\n   * SECURITY UPDATE: Buffer OverRead in RFC 1123 date/time\n     - debian/patches/CVE-2023-49285.patch: Fix date parsing in RFC 1123\n     - CVE-2023-49285\n   * SECURITY UPDATE: Denial of Service attack against Helper\n     process management\n     - debian/patches/CVE-2023-49286.patch: Add exit without\n       asserting when helper process startup fails\n     - CVE-2023-49286","status":"published","published":"2023-12-21T18:44:34Z","modified":"2026-06-04T10:03:17.445054Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2023-1703184336","title":"Fix CVE(s): CVE-2023-49285, CVE-2023-49286","description":"\n   * SECURITY UPDATE: Buffer OverRead in RFC 1123 date/time\n     - debian/patches/CVE-2023-49285.patch: Fix date parsing in RFC 1123\n     - CVE-2023-49285\n   * SECURITY UPDATE: Denial of Service attack against Helper\n     process management\n     - debian/patches/CVE-2023-49286.patch: Add exit without\n       asserting when helper process startup fails\n     - CVE-2023-49286","status":"published","published":"2023-12-21T18:45:40Z","modified":"2026-06-04T10:03:36.821626Z","updated_at":"2026-11-02T15:43:40.88185Z"},{"id":"CLSA-2025-1736503631","title":"squid: Fix of 4 CVEs","description":"- CVE-2023-49285: Fix Buffer Overread bug to prevent Denial of Service attack\n- CVE-2023-49286: Fix Incorrect Check of Function Return Value bug in Helper\n  process management\n- CVE-2023-50269: Fix Uncontrolled Recursion bug in HTTP Request parsing by\n  limiting X-Forwarded-For header size to prevent Denial of Service attack.\n- CVE-2024-25617: Fix Collapse of Data into Unsafe Value bug to prevent Denial\n  of Service attack against HTTP header parsing","status":"published","published":"2025-01-10T10:07:18Z","modified":"2026-06-01T00:30:27.526530405Z","updated_at":"2026-11-02T15:43:41.281406Z"},{"id":"DLA-3709-1","title":"squid - security update","status":"published","published":"2024-01-09T00:00:00Z","modified":"2026-03-09T01:23:08.06653Z","updated_at":"2026-11-02T15:46:12.203458Z"},{"id":"DSA-5637-1","title":"squid - security update","status":"published","published":"2024-03-08T00:00:00Z","modified":"2026-03-09T02:10:03.731725Z","updated_at":"2026-11-02T15:46:17.892347Z"},{"id":"MGASA-2024-0102","title":"Updated squid packages fix security vulnerabilities","description":"Due to an Improper Validation of Specified Index bug, Squid versions\n3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using `--with-openssl`\nare vulnerable to a Denial of Service attack against SSL Certificate\nvalidation. This problem allows a remote server to perform Denial of\nService against Squid Proxy by initiating a TLS Handshake with a\nspecially crafted SSL Certificate in a server certificate chain. This\nattack is limited to HTTPS and SSL-Bump. (CVE-2023-46724)\nDue to a Buffer Overread bug Squid is vulnerable to a Denial of Service\nattack against Squid HTTP Message processing. (CVE-2023-49285)\nDue to an Incorrect Check of Function Return Value bug Squid is\nvulnerable to a Denial of Service attack against its Helper process\nmanagement. (CVE-2023-49286)\nDue to an Uncontrolled Recursion bug in versions 2.6 through\n2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5,\nSquid may be vulnerable to a Denial of Service attack against HTTP\nRequest parsing. This problem allows a remote client to perform Denial\nof Service attack by sending a large X-Forwarded-For header when the\nfollow_x_forwarded_for feature is configured. (CVE-2023-50269)\nDue to an expired pointer reference bug, Squid prior to version 6.6 is\nvulnerable to a Denial of Service attack against Cache Manager error\nresponses. This problem allows a trusted client to perform Denial of\nService when generating error pages for Client Manager reports.\n(CVE-2024-23638)\n Starting in version 3.5.27 and prior to version 6.8, Squid may be\nvulnerable to a Denial of Service attack against HTTP Chunked decoder\ndue to an uncontrolled recursion bug. This problem allows a remote\nattacker to cause Denial of Service when sending a crafted, chunked,\nencoded HTTP Message. (CVE-2024-25111)\nDue to a Collapse of Data into Unsafe Value bug ,Squid may be vulnerable\nto a Denial of Service attack against HTTP header parsing. This problem\nallows a remote client or a remote server to perform Denial of Service\nwhen sending oversized headers in HTTP messages. In versions of Squid\nprior to 6.5 this can be achieved if the request_header_max_size or\nreply_header_max_size settings are unchanged from the default.\n(CVE-2024-25617)\n","status":"published","published":"2024-03-31T03:27:58Z","modified":"2026-04-16T04:42:22.006828055Z","updated_at":"2026-11-02T15:49:42.684501Z"},{"id":"openSUSE-SU-2024:13631-1","title":"squid-6.6-2.1 on GA media","description":"These are all security issues fixed in the squid-6.6-2.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:06:14.970905Z","updated_at":"2026-11-02T16:58:36.327643Z"},{"id":"ROOT-OS-ALPINE-318-CVE-2023-49286","title":"CVE-2023-49286 in squid - Patched by Root","description":"Root has patched CVE-2023-49286 in the squid package for Root:Alpine:3.18. Multiple fixed versions available.","status":"published","published":"2026-09-29T10:43:34Z","modified":"2026-09-29T11:15:05.58693124Z","updated_at":"2026-11-02T15:53:28.259095Z"},{"id":"SUSE-SU-2023:4698-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2023-49285: Fixed buffer over read bug on HTTP Message processing flow (bsc#1217813)\n- CVE-2023-49286: Fixed Denial of Service vulnerability in helper process management (bsc#1217815)\n- Fix X-Forwarded-For Stack Overflow (bsc#1217654)\n","status":"published","published":"2023-12-08T16:54:02Z","modified":"2026-02-04T04:08:22.59017Z","updated_at":"2026-11-02T15:53:53.865042Z"},{"id":"SUSE-SU-2023:4724-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2023-49285: Fixed buffer over read bug on HTTP Message processing flow (bsc#1217813)\n- CVE-2023-49286: Fixed Denial of Service vulnerability in helper process management (bsc#1217815)\n- Fix X-Forwarded-For Stack Overflow (bsc#1217654)\n","status":"published","published":"2023-12-12T10:08:44Z","modified":"2026-02-04T02:33:38.194588Z","updated_at":"2026-11-02T15:53:53.865042Z"},{"id":"SUSE-SU-2023:4825-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2023-49285: Fixed buffer over read bug on HTTP Message processing flow (bsc#1217813)\n- CVE-2023-49286: Fixed Denial of Service vulnerability in helper process management (bsc#1217815)\n- Fix X-Forwarded-For Stack Overflow (bsc#1217654)\n","status":"published","published":"2023-12-14T10:03:29Z","modified":"2025-05-02T04:35:44.42345Z","updated_at":"2026-11-02T15:53:53.865042Z"},{"id":"USN-6594-1","title":"squid vulnerabilities","description":"Joshua Rogers discovered that Squid incorrectly handled HTTP message\nprocessing. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2023-49285)\n\nJoshua Rogers discovered that Squid incorrectly handled Helper process\nmanagement. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2023-49286)\n\nJoshua Rogers discovered that Squid incorrectly handled HTTP request\nparsing. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2023-50269)\n","status":"published","published":"2024-01-23T03:05:16Z","modified":"2026-02-10T04:43:28Z","updated_at":"2026-11-02T16:58:17.305935Z"},{"id":"USN-6857-1","title":"squid3 vulnerabilities","description":"Joshua Rogers discovered that Squid incorrectly handled requests with the\nurn: scheme. A remote attacker could possibly use this issue to cause\nSquid to consume resources, leading to a denial of service. This issue\nonly affected Ubuntu 16.04 LTS. (CVE-2021-28651)\n\nIt was discovered that Squid incorrectly handled SSPI and SMB\nauthentication. A remote attacker could use this issue to cause Squid to\ncrash, resulting in a denial of service, or possibly obtain sensitive\ninformation. This issue only affected Ubuntu 16.04 LTS. (CVE-2022-41318)\n\nJoshua Rogers discovered that Squid incorrectly handled HTTP message\nprocessing. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2023-49285)\n\nJoshua Rogers discovered that Squid incorrectly handled Helper process\nmanagement. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. (CVE-2023-49286)\n\nJoshua Rogers discovered that Squid incorrectly handled HTTP request\nparsing. A remote attacker could possibly use this issue to cause\nSquid to crash, resulting in a denial of service. \n(CVE-2023-50269, CVE-2024-25617)\n","status":"published","published":"2024-06-27T10:48:19Z","modified":"2026-06-25T13:32:28.765713346Z","updated_at":"2026-11-02T16:58:17.914523Z"}]}}