Low severity3.7NVD Advisory· Published Mar 9, 2021· Updated Jun 17, 2026
CVE-2021-28116
CVE-2021-28116
Description
Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
17- Squid/Squiddescription
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- osv-coords10 versionspkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP2pkg:rpm/suse/squid&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Server%20Applications%2015%20SP3pkg:rpm/almalinux/libecap-develpkg:rpm/almalinux/squidpkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/squid&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/squid&distro=openSUSE%20Leap%2015.2pkg:rpm/almalinux/libecap
< 4.17-4.21.1+ 9 more
- (no CPE)range: < 4.17-4.21.1
- (no CPE)range: < 4.17-4.21.1
- (no CPE)range: < 4.17-5.29.1
- (no CPE)range: < 4.17-5.29.1
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 7:4.15-3.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 4.17-5.29.1
- (no CPE)range: < 5.2-1.1
- (no CPE)range: < 4.17-lp152.2.12.1
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
Patches
Vulnerability mechanics
References
8- www.openwall.com/lists/oss-security/2021/10/04/1nvdMailing ListThird Party Advisory
- www.squid-cache.org/Versions/nvdProductVendor Advisory
- security.gentoo.org/glsa/202105-14nvdThird Party Advisory
- www.debian.org/security/2022/dsa-5171nvdThird Party Advisory
- www.zerodayinitiative.com/advisories/ZDI-21-157/nvdThird Party AdvisoryVDB Entry
- github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82nvdBroken Link
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/nvd
News mentions
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