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CVE-2021-26690

Published: 10 June 2021

Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
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)
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)
jammy
Released (2.4.46-4ubuntu2)
Patches:
upstream: https://github.com/apache/httpd/commit/67bd9bfe6c38831e14fe7122f1d84391472498f8

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H