USN-3834-1: Perl vulnerabilities

03 December 2018

Several security issues were fixed in Perl.

Releases

Packages

  • perl - Practical Extraction and Report Language

Details

Jayakrishna Menon discovered that Perl incorrectly handled Perl_my_setenv.
An attacker could use this issue to cause Perl to crash, resulting in a
denial of service, or possibly execute arbitrary code. (CVE-2018-18311)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service, or possibly execute arbitrary code. This
issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10.
(CVE-2018-18312)

Eiichi Tsukata discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service. (CVE-2018-18313)

Jakub Wilk discovered that Perl incorrectly handled certain regular
expressions. An attacker could use this issue to cause Perl to crash,
resulting in a denial of service. This issue only affected Ubuntu 16.04
LTS, Ubuntu 18.04 LTS, and Ubuntu 18.10. (CVE-2018-18314)

Update instructions

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

Ubuntu 18.10
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

Related notices