CVE-2011-2767

Publication date 26 August 2018

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

mod_perl 2.0 through 2.0.10 allows attackers to execute arbitrary Perl code by placing it in a user-owned .htaccess file, because (contrary to the documentation) there is no configuration option that permits Perl code for the administrator's control of HTTP request processing without also permitting unprivileged users to run Perl code in the context of the user account that runs Apache HTTP Server processes.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
libapache2-mod-perl2	18.10 cosmic	Fixed 2.0.10-2ubuntu3.18.10.1
	18.04 LTS bionic	Fixed 2.0.10-2ubuntu3.18.04.1
	16.04 LTS xenial	Fixed 2.0.9-4ubuntu1.2
	14.04 LTS trusty	Fixed 2.0.8+httpd24-r1449661-6ubuntu2.1

Patch details

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

Package	Patch details
libapache2-mod-perl2	Vendor: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=644169#19

Severity score breakdown

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality impact	High
Integrity impact	High
Availability impact	High

Scores

Parameter	Value
Base score	9.8 · Critical
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

USN-3825-2
mod_perl vulnerability
22 November 2018

USN-3825-1
mod_perl vulnerability
21 November 2018