CVE-2023-46724
SQUID-2023:4 Denial of Service in SSL Certificate validation
02 Description
SQUID-2023:4 Denial of Service in SSL Certificate validation
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 4.04% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 90.2% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-11-01 19:09Z2 YR AGO
- Last updated
- 2025-02-13 17:14Z1 YR AGO
- Reserved
- 2023-10-25
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.6)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- Weaknesses
- CWE-125Out-of-bounds ReadBase
- CWE-129Improper Validation of Array IndexVariant
- CWE-786Access of Memory Location Before Start of BufferBase
- CWE-823Use of Out-of-range Pointer OffsetBase
- CWE-1285Improper Validation of Specified Index, Position, or Offset in InputBase
- CWE-295Improper Certificate ValidationBase
- Data version
- 5.1
- Document digest
- 58ef9e7e781aab2a2feb5ab4887d41e4b6ff6e9ced5a3f124ba1f56cb5ed8ec3
05 Affected products
06 References
- github.comhttps://github.com/squid-cache/squid/security/advisories/GHSA-73m6-jm96-c6r3
- github.comhttps://github.com/squid-cache/squid/commit/b70f864940225dfe69f9f653f948e787f99c3810
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v5/SQUID-2023_4.patch
- www.squid-cache.orghttp://www.squid-cache.org/Versions/v6/SQUID-2023_4.patch
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20231208-0001/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/
- lists.fedoraproject.orghttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/
07 Fixed in
AlmaLinux 8
- libecap Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- libecap-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- squid Fixed in 7:4.15-7.module_el8.9.0+3708+6acaac63.5
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- squid Fixed in 7:5.5-6.el9_3.5
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- libecap Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- libecap-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- squid Fixed in 7:4.15-7.module_el8.9.0+3708+6acaac63.5
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- squid Fixed in 7:5.5-6.el9_3.5
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- squid Fixed in 5.7-2+deb12u1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- squid Fixed in 6.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- squid Fixed in 6.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- squid Fixed in 5.7-0ubuntu0.22.04.2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- squid Fixed in 6.1-2ubuntu2
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- squid3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- squid3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.