CVE-2023-5824
squid-purge: A flaw was found in Squid
CVE-2023-5824 is fixed in 10 products on 1 platform, first by DEBIAN-CVE-2023-5824, released November 3, 2023. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
9.6
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0328
88th percentile
A flaw was found in Squid. The limits applied for validation of HTTPresponse headers are applied before caching. However, Squid may grow acached HTTP response header beyond the configured maximum size, causing astall or crash of the worker process when a large header is retrieved fromthe disk cache, resulting in a denial of service.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libecap · RHEL 8 | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | RHSA-2023:7668 | Dec 6, 2023 |
| libecap · almalinux 8 | 1.0.1-2.module_el8.6.0+2741+01592ae8 | ALSA-2023:7668 | Dec 6, 2023 |
| libecap · ol 8 | 0:1.0.1-2.module+el8.9.0+90083+f7556140 | ELSA-2023-7668 | Dec 11, 2023 |
| libecap · rocky 8 | 0:1.0.1-2.module+el8.9.0+1437+df5ea8f0 | RLSA-2023:7668 | Dec 6, 2023 |
| libecap-devel · RHEL 8 | 0:1.0.1-2.module+el8.9.0+19703+a1da7223 | RHSA-2023:7668 | Dec 6, 2023 |
| libecap-devel · almalinux 8 | 1.0.1-2.module_el8.6.0+2741+01592ae8 | ALSA-2023:7668 | Dec 6, 2023 |
| libecap-devel · ol 8 | 0:1.0.1-2.module+el8.9.0+90083+f7556140 | ELSA-2023-7668 | Dec 11, 2023 |
| squid · Debian 12.15 (bookworm) | 5.7-2+deb12u3 | DSA-5982-1 | Aug 21, 2025 |
| squid · Debian 13.5 (trixie) | 6.5-1 | DEBIAN-CVE-2023-5824 | Nov 3, 2023 |
| squid · Debian 14 | 6.5-1 | DEBIAN-CVE-2023-5824 | Nov 3, 2023 |
| squid · RHEL 8 | 7:4.15-7.module+el8.9.0+20806+014d88aa.3 | RHSA-2023:7668 | Dec 6, 2023 |
| squid · RHEL 9 | 7:5.5-6.el9_3.2 | RHSA-2023:7465 | Nov 22, 2023 |
| squid · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.12 | squid 4.10-1ubuntu1.12 | Aug 1, 2025 |
| squid · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squid 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squid · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squid 6.5-1ubuntu1 | Feb 14, 2024 |
| squid · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squid 6.5-1ubuntu1 | Jan 16, 2026 |
| squid · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squid 6.5-1ubuntu1 | Jan 16, 2026 |
| squid · almalinux 8 | 7:4.15-7.module_el8.9.0+3696+b881db49.3 | ALSA-2023:7668 | Dec 6, 2023 |
| squid · almalinux 9 | 7:5.5-6.el9_3.2 | ALSA-2023:7465 | Nov 22, 2023 |
| squid · amzn 2023 | 7:6.6-1.amzn2023.0.3 | ALAS2023-2024-578 | Mar 27, 2024 |
| squid · ol 8 | 7:4.15-7.module+el8.9.0+90100+fede0fa7.3 | ELSA-2023-7668 | Dec 11, 2023 |
| squid · ol 9 | 7:5.5-6.el9_3.2 | ELSA-2023-7465 | Nov 28, 2023 |
| squid · rocky 8 | 7:4.15-7.module+el8.9.0+1568+6d4fd5d4.1 | RLSA-2023:7668 | Dec 6, 2023 |
| squid-cgi · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.12 | squid-cgi 4.10-1ubuntu1.12 | Aug 1, 2025 |
| squid-cgi · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squid-cgi 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squid-cgi · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squid-cgi 6.5-1ubuntu1 | Feb 14, 2024 |
| squid-cgi · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squid-cgi 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-cgi · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squid-cgi 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-common · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.12 | squid-common 4.10-1ubuntu1.12 | Aug 1, 2025 |
| squid-common · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squid-common 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squid-common · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squid-common 6.5-1ubuntu1 | Feb 14, 2024 |
| squid-common · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squid-common 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-common · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squid-common 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-debuginfo · amzn 2023 | 7:6.6-1.amzn2023.0.3 | ALAS2023-2024-578 | Mar 27, 2024 |
| squid-debugsource · amzn 2023 | 7:6.6-1.amzn2023.0.3 | ALAS2023-2024-578 | Mar 27, 2024 |
| squid-openssl · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squid-openssl 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squid-openssl · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squid-openssl 6.5-1ubuntu1 | Feb 14, 2024 |
| squid-openssl · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squid-openssl 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-openssl · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squid-openssl 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-purge · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.12 | squid-purge 4.10-1ubuntu1.12 | Aug 1, 2025 |
| squid-purge · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squid-purge 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squid-purge · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squid-purge 6.5-1ubuntu1 | Feb 14, 2024 |
| squid-purge · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squid-purge 6.5-1ubuntu1 | Jan 16, 2026 |
| squid-purge · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squid-purge 6.5-1ubuntu1 | Jan 16, 2026 |
| squidclient · Ubuntu 20.04 LTS (focal) | 4.10-1ubuntu1.12 | squidclient 4.10-1ubuntu1.12 | Aug 1, 2025 |
| squidclient · Ubuntu 22.04.1 LTS (jammy) | 5.7-0ubuntu0.22.04.4 | squidclient 5.7-0ubuntu0.22.04.4 | Aug 1, 2025 |
| squidclient · Ubuntu 24.04.5 LTS (noble) | 6.5-1ubuntu1 | squidclient 6.5-1ubuntu1 | Feb 14, 2024 |
| squidclient · Ubuntu 24.10 (oracular) | 6.5-1ubuntu1 | squidclient 6.5-1ubuntu1 | Jan 16, 2026 |
| squidclient · Ubuntu 25.04 (plucky) | 6.5-1ubuntu1 | squidclient 6.5-1ubuntu1 | Jan 16, 2026 |
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