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CVE-2021-28116

Published: 9 March 2021

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.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
squid
Launchpad, Ubuntu, Debian
impish
Released (4.13-10ubuntu5)
jammy
Released (4.13-10ubuntu5)
lunar
Released (4.13-10ubuntu5)
upstream
Released (4.17)
bionic Does not exist

focal
Released (4.10-1ubuntu1.5)
groovy Ignored
(end of life)
trusty Does not exist

xenial Does not exist

hirsute
Released (4.13-1ubuntu4.2)
kinetic
Released (4.13-10ubuntu5)
mantic
Released (4.13-10ubuntu5)
Patches:
upstream: http://www.squid-cache.org/Versions/v4/changesets/SQUID-2020_12.patch
squid3
Launchpad, Ubuntu, Debian
impish Does not exist

jammy Does not exist

xenial Needed

focal Does not exist

groovy Does not exist

hirsute Does not exist

trusty Does not exist

upstream Needs triage

bionic
Released (3.5.27-1ubuntu1.12)
kinetic Does not exist

lunar Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N