PEAR could be made to run programs if it processed a specially crafted file.
Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled certain archive paths. A remote attacker could possibly use this issue to execute arbitrary code.
14 January 2019
A security issue affects these releases of Ubuntu and its derivatives:
PEAR could be made to run programs if it processed a specially crafted file.
Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled certain archive paths. A remote attacker could possibly use this issue to execute arbitrary code.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.