CVE-2018-17199

Publication date 30 January 2019

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	18.10 cosmic	Fixed 2.4.34-1ubuntu2.1
	18.04 LTS bionic	Fixed 2.4.29-1ubuntu4.6
	16.04 LTS xenial	Fixed 2.4.18-2ubuntu3.10
	14.04 LTS trusty	Fixed 2.4.7-1ubuntu4.22

Patch details

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

Package	Patch details
apache2	Upstream: http://svn.apache.org/viewvc?view=revision&revision=1851409

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	High
Availability impact	None
Vector	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References

Related Ubuntu Security Notices (USN)

USN-3937-1
Apache HTTP Server vulnerabilities
4 April 2019