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ALPINE-CVE-2021-31807

ALPINE-CVE-2021-31807 PUBLISHED CVSS 6.5 MEDIUM

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.

Risk Scores

CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.15squid2.7.7-r4, 2.7.7-r2, 2.7.7-r1
Alpine:v3.19squid4.2-r1, 0, 2.7.6-r0
Alpine:v3.16squid3.3.11-r1, 3.3.2-r0, 3.3.3-r0
Alpine:v3.12squid0, 2.7.6-r1, 2.7.6-r10
Alpine:v3.24squid3.0
Alpine:v3.22squid3.5.4-r0, 3.0, 5.0.5-r0
Alpine:v3.23squid3.0, 5.0.4-r1, 5.0.4-r0
Alpine:v3.20squid3.0, 3.2.0.12-r4, 0
Alpine:v3.14squid3.0, 5.0.5-r0, 5.0.4-r1
Alpine:v3.11squid4.4-r0, 0, 2.7.6-r0
Alpine:v3.21squid3.5.13-r0, 3.2.0.18-r1, 3.2.0.19-r0
Alpine:v3.13squid3.3.8-r0, 3.3.8-r1, 3.3.9-r0
Alpine:v3.18squid3.2.0.17-r0, 3.4.6-r0, 3.4.5-r0
Alpine:v3.10squid3.5.23-r1, 3.5.23-r2, 3.5.23-r3
Alpine:v3.17squid2.7.9-r4, 2.7.9-r3, 2.7.9-r2

Timeline

  • Jun 8, 2021 CVE Published
  • Apr 30, 2026 Distribution Patch
  • Jul 8, 2026 CVE Updated
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