USN-2943-1: PCRE vulnerabilities

Ubuntu Security Notice USN-2943-1

29th March, 2016

pcre3 vulnerabilities

A security issue affects these releases of Ubuntu and its
derivatives:

Ubuntu 15.10
Ubuntu 14.04 LTS
Ubuntu 12.04 LTS

Summary

PCRE could be made to crash or run programs if it processed a
specially-crafted regular expression.

Software description

pcre3
– Perl 5 Compatible Regular Expression Library

Details

It was discovered that PCRE incorrectly handled certain regular
expressions. A remote attacker could use this issue to cause applications
using PCRE to crash, resulting in a denial of service, or possibly execute
arbitrary code.

Update instructions

The problem can be corrected by updating your system to the following
package version:

Ubuntu 15.10:: libpcre3

2:8.35-7.1ubuntu1.3
Ubuntu 14.04 LTS:: libpcre3

1:8.31-2ubuntu2.2
Ubuntu 12.04 LTS:: libpcre3

8.12-4ubuntu0.2

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart applications using PCRE,
such as the Apache HTTP server and Nginx, to make all the necessary
changes.