USN-3857-1: PEAR vulnerability

14 January 2019

php-pear vulnerability

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS


PEAR could be made to run programs if it processed a specially crafted file.

Software Description

  • php-pear - PHP Extension and Application Repository


Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled certain archive paths. A remote attacker could possibly use this issue to execute arbitrary code.

Update instructions

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

Ubuntu 18.10
php-pear - 1:1.10.5+submodules+notgz-1ubuntu1.18.10.1
Ubuntu 18.04 LTS
php-pear - 1:1.10.5+submodules+notgz-1ubuntu1.18.04.1
Ubuntu 16.04 LTS
php-pear - 1:1.10.1+submodules+notgz-6ubuntu0.1

To update your system, please follow these instructions:

In general, a standard system update will make all the necessary changes.