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CVE-2018-1312

Published: 26 March 2018

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.

Priority

Low

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
apache2
Launchpad, Ubuntu, Debian
upstream
Released (2.4.30)
trusty
Released (2.4.7-1ubuntu4.20)
xenial
Released (2.4.18-2ubuntu3.8)
artful
Released (2.4.27-2ubuntu4.1)
bionic
Released (2.4.29-1ubuntu4.1)
cosmic
Released (2.4.29-1ubuntu4.1)
Patches:
upstream: https://svn.apache.org/viewvc?view=revision&revision=1824481 (2.4)

Severity score breakdown

Parameter Value
Base score 9.8
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