CVE-2024-27316

Publication date 27 March 2024

Last updated 24 June 2025

Ubuntu priority

Cvss 3 Severity Score

Description

HTTP/2 incoming headers exceeding the limit are temporarily buffered in nghttp2 in order to generate an informative HTTP 413 response. If a client does not stop sending headers, this leads to memory exhaustion.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	25.10 questing	Fixed 2.4.58-1ubuntu8.1
	25.04 plucky	Fixed 2.4.58-1ubuntu8.1
	24.10 oracular	Fixed 2.4.58-1ubuntu8.1
	24.04 LTS noble	Fixed 2.4.58-1ubuntu8.1
	23.10 mantic	Fixed 2.4.57-2ubuntu2.4
	22.04 LTS jammy	Fixed 2.4.52-1ubuntu4.9
	20.04 LTS focal	Fixed 2.4.41-4ubuntu3.17
	18.04 LTS bionic	Fixed 2.4.29-1ubuntu4.27+esm2
	16.04 LTS xenial	Fixed 2.4.18-2ubuntu3.17+esm12
	14.04 LTS trusty	Needs evaluation

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Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package	Patch details
apache2	Upstream: 0d73970

Severity score breakdown

Parameter	Value
Base score	7.5 · High
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

Related Ubuntu Security Notices (USN)

USN-6729-1
Apache HTTP Server vulnerabilities
11 April 2024

USN-6729-2
Apache HTTP Server vulnerabilities
17 April 2024

USN-6729-3
Apache HTTP Server vulnerabilities
29 April 2024