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CVE-2021-46784

Published: 31 December 2021

In Squid 3.x through 3.5.28, 4.x through 4.17, and 5.x before 5.6, due to improper buffer management, a Denial of Service can occur when processing long Gopher server responses.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
squid
Launchpad, Ubuntu, Debian
bionic Does not exist

trusty Does not exist

focal
Released (4.10-1ubuntu1.6)
impish
Released (4.13-10ubuntu5.1)
jammy
Released (5.2-1ubuntu4.1)
upstream
Released (5.6)
xenial Does not exist

kinetic
Released (5.2-1ubuntu5)
lunar
Released (5.2-1ubuntu5)
mantic
Released (5.2-1ubuntu5)
Patches:
upstream: https://github.com/squid-cache/squid/commit/780c4ea1b4c9d2fb41f6962aa6ed73ae57f74b2b (v4)
upstream: https://github.com/squid-cache/squid/commit/1740315dc85ade1965934b63c0a3244860bac0a1 (v5)
upstream: http://www.squid-cache.org/Versions/v5/changesets/SQUID-2021_7.patch (v5)
squid3
Launchpad, Ubuntu, Debian
bionic
Released (3.5.27-1ubuntu1.13)
focal Does not exist

impish Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Needed

kinetic Does not exist

lunar Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H