Medium severity6.5NVD Advisory· Published Jun 8, 2021· Updated Jun 17, 2026
CVE-2021-31807
CVE-2021-31807
Description
An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
32cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*+ 23 more
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*range: >=3.0,<4.15
- cpe:2.3:a:squid-cache:squid:2.5.stable2:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable3:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable4:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable5:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable6:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable7:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable8:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable9:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable10:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable11:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable12:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable13:*:*:*:*:*:*:*
- cpe:2.3:a:squid-cache:squid:2.5.stable14:*:*:*:*:*:*:*
- 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: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:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:a:netapp:cloud_manager:-:*:*:*:*:*:*:*
- Squid/Squiddescription
- osv-coords3 versions
< 1.0.1-2.module_el8.6.0+2741+01592ae8+ 2 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: < 7:4.15-3.module_el8.6.0+3010+383bc947.1
Patches
Vulnerability mechanics
References
8- www.squid-cache.org/Versions/v4/changesets/squid-4-e7cf864f938f24eea8af0692c04d16790983c823.patchnvdPatchVendor Advisory
- seclists.org/fulldisclosure/2023/Oct/14nvdMailing ListThird Party Advisory
- www.openwall.com/lists/oss-security/2023/10/11/3nvdMailing ListThird Party Advisory
- github.com/squid-cache/squid/security/advisories/GHSA-pxwq-f3qr-w2xfnvdThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/06/msg00014.htmlnvdMailing ListThird Party Advisory
- security.netapp.com/advisory/ntap-20210716-0007/nvdThird Party Advisory
- 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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