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

Cvss 3 Severity Score

7.3

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/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

References

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