CVE-2021-31806 — Improper Encoding or Escaping of Output in Squid

CWE-116 — Improper Encoding or Escaping of OutputCWE-20 — Improper Input Validation7 documents7 sources
Severity
6.5MEDIUMNVD
EPSS
86.0%
top 0.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
SquidSquid-cache SquidDebian Linux+1 more
Timeline
PublishedMay 27
Latest updateMay 24

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 2.8 | Impact: 3.6

Affected Packages2 packages

▶NVDsquid-cache/squid5.0 — 5.0.6+1
▶Debiansquid/squid< 4.13-10+3

Also affects: Debian Linux 10.0, 9.0, Fedora 33, 34

Patches

Patch: www.squid-cache.org ↗Patch: github.com ↗Patch: www.squid-cache.org ↗

🔴Vulnerability Details

3
GHSA
GHSA-3v8m-hgx9-fgh9: An issue was discovered in Squid before 4↗2022-05-24
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CVEList
CVE-2021-31806: An issue was discovered in Squid before 4↗2021-05-27
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OSV
CVE-2021-31806: An issue was discovered in Squid before 4↗2021-05-27
▶

📋Vendor Advisories

3
Ubuntu
Squid vulnerabilities↗2021-06-03
▶
Red Hat
squid: improper input validation in HTTP Range header↗2021-05-10
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Debian
CVE-2021-31806: squid - An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memo...↗2021
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CVE-2021-31806 — Squid-cache Squid vulnerability | cvebase