USN-3625-2: Perl vulnerabilities

17 April 2018

perl vulnerabilities

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

  • Ubuntu 12.04 ESM

Summary

Several security issues were fixed in Perl.

Software Description

  • perl - Practical Extraction and Report Language

Details

USN-3625-1 fixed a vulnerability in Perl. This update provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that Perl incorrectly handled certain regular expressions. An attacker could possibly use this issue to cause Perl to hang, resulting in a denial of service. (CVE-2015-8853)

It was discovered that Perl incorrectly loaded libraries from the current working directory. A local attacker could possibly use this issue to execute arbitrary code. (CVE-2016-6185)

It was discovered that Perl incorrectly handled the rmtree and remove_tree functions. A local attacker could possibly use this issue to set the mode on arbitrary files. (CVE-2017-6512)

GwanYeong Kim discovered that Perl incorrectly handled certain data when using the pack function. An attacker could use this issue to cause Perl to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-6913)

Update instructions

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

Ubuntu 12.04 ESM
perl - 5.14.2-6ubuntu2.7

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.

References