USN-2943-1: PCRE vulnerabilities

29 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 versions:

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.

References