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

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)
	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)
	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

References

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