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USN-2943-1: PCRE vulnerabilities

29 March 2016

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



  • pcre3 - Perl 5 Compatible Regular Expression Library


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
Ubuntu 14.04
Ubuntu 12.04

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

Related notices

  • USN-2694-1: libpcrecpp0, libpcre3-udeb, libpcre3-dev, pcregrep, pcre3, libpcre3