CVE-2024-38477

Publication date 1 July 2024

Last updated 19 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request. Users are recommended to upgrade to version 2.4.60, which fixes this issue.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	25.10 questing	Fixed 2.4.62-1ubuntu1
	25.04 plucky	Fixed 2.4.62-1ubuntu1
	24.10 oracular	Fixed 2.4.62-1ubuntu1
	24.04 LTS noble	Fixed 2.4.58-1ubuntu8.2
	23.10 mantic	Fixed 2.4.57-2ubuntu2.5
	22.04 LTS jammy	Fixed 2.4.52-1ubuntu4.10
	20.04 LTS focal	Fixed 2.4.41-4ubuntu3.19
	18.04 LTS bionic	Fixed 2.4.29-1ubuntu4.27+esm3
	16.04 LTS xenial	Fixed 2.4.18-2ubuntu3.17+esm13
	14.04 LTS trusty	Needs evaluation

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Notes

mdeslaur

The second commit below is required to prevent a regression when proxying http2. See launchpad bug below.

Patch details

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

Package	Patch details
apache2	Upstream: https://svn.apache.org/viewvc?view=revision&revision=1918607 Upstream: 1d98d4d Upstream: 4d3a308

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