CVE-2018-1312

Publication date 26 March 2018

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
apache2	18.10 cosmic	Fixed 2.4.29-1ubuntu4.1
	18.04 LTS bionic	Fixed 2.4.29-1ubuntu4.1
	17.10 artful	Fixed 2.4.27-2ubuntu4.1
	16.04 LTS xenial	Fixed 2.4.18-2ubuntu3.8
	14.04 LTS trusty	Fixed 2.4.7-1ubuntu4.20

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=1824481

Severity score breakdown

Parameter	Value
Base score	9.8 · Critical
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	High
Integrity impact	High
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3627-1
Apache HTTP Server vulnerabilities
19 April 2018

USN-3627-2
Apache HTTP Server vulnerabilities
30 April 2018

USN-3937-2
Apache vulnerabilities
10 April 2019