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CVE-2020-35452

Published: 10 June 2021

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow

Priority

Low

Cvss 3 Severity Score

7.3

Score breakdown

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
jammy
Released (2.4.46-4ubuntu2)
trusty
Released (2.4.7-1ubuntu4.22+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
upstream
Released (2.4.46-6)
xenial
Released (2.4.18-2ubuntu3.17+esm1)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic
Released (2.4.29-1ubuntu4.16)
focal
Released (2.4.41-4ubuntu3.3)
groovy
Released (2.4.46-1ubuntu1.2)
hirsute
Released (2.4.46-4ubuntu1.1)
impish
Released (2.4.46-4ubuntu2)
Patches:
upstream: https://github.com/apache/httpd/commit/3b6431eb9c9dba603385f70a2131ab4a01bf0d3b

Severity score breakdown

Parameter Value
Base score 7.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L