High severity8.6NVD Advisory· Published Dec 14, 2023· Updated Jun 17, 2026
CVE-2023-50269
CVE-2023-50269
Description
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.
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Affected products
35- osv-coords21 versionspkg:rpm/almalinux/libecappkg:rpm/almalinux/libecap-develpkg:rpm/almalinux/squidpkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP4pkg:rpm/suse/squid&distro=SUSE%20Manager%20Server%204.3pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-LTSSpkg:rpm/suse/squid&distro=SUSE%20Manager%20Proxy%204.3pkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP3-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP3pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP3-LTSSpkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Enterprise%20Storage%207.1pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSS
< 1.0.1-2.module_el8.6.0+2741+01592ae8+ 20 more
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 7:4.15-7.module_el8.9.0+3749+dbf371ed.10
- (no CPE)range: < 6.6-2.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 5.7-150400.3.23.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-4.41.1
- (no CPE)range: < 4.17-150000.5.49.1
- (no CPE)range: < 4.17-4.41.1
- (no CPE)range: < 4.17-150000.5.49.1
>= 2.6, <= 2.7.STABLE9+ 12 more
- (no CPE)range: >= 2.6, <= 2.7.STABLE9
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*range: >=3.1,<=5.9
- cpe:2.3:a:squid-cache:squid:2.6:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:-:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable1:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable2:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable3:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable4:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable5:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable6:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable7:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable8:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.7:stable9:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
7- github.com/squid-cache/squid/security/advisories/GHSA-wgq4-4cfg-c4x3nvdThird Party Advisory
- www.squid-cache.org/Versions/v5/SQUID-2023_10.patchnvdBroken Link
- www.squid-cache.org/Versions/v6/SQUID-2023_10.patchnvdBroken Link
- lists.debian.org/debian-lts-announce/2024/01/msg00003.htmlnvd
- lists.fedoraproject.org/archives/list/[email protected]/message/A5QASTMCUSUEW3UOMKHZJB3FTONWSRXS/nvd
- lists.fedoraproject.org/archives/list/[email protected]/message/MEV66D3PAAY6K7TWDT3WZBLCPLASFJDC/nvd
- security.netapp.com/advisory/ntap-20240119-0005/nvd
News mentions
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