==========================================================================
Ubuntu Security Notice USN-2916-1
March 02, 2016
perl vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 15.10
– Ubuntu 14.04 LTS
– Ubuntu 12.04 LTS
Summary:
Several security issues were fixed in Perl.
Software Description:
– perl: Practical Extraction and Report Language
Details:
It was discovered that Perl incorrectly handled certain regular expressions
with an invalid backreference. An attacker could use this issue to cause
Perl to crash, resulting in a denial of service, or possibly execute
arbitrary code. (CVE-2013-7422)
Markus Vervier discovered that Perl incorrectly handled nesting in the
Data::Dumper module. An attacker could use this issue to cause Perl to
consume memory and crash, resulting in a denial of service. (CVE-2014-4330)
Stephane Chazelas discovered that Perl incorrectly handled duplicate
environment variables. An attacker could possibly use this issue to bypass
the taint protection mechanism. (CVE-2016-2381)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 15.10:
perl 5.20.2-6ubuntu0.2
Ubuntu 14.04 LTS:
perl 5.18.2-2ubuntu1.1
Ubuntu 12.04 LTS:
perl 5.14.2-6ubuntu2.5
In general, a standard system update will make all the necessary changes.
References:
http://www.ubuntu.com/usn/usn-2916-1
CVE-2013-7422, CVE-2014-4330, CVE-2016-2381
Package Information:
https://launchpad.net/ubuntu/+source/perl/5.20.2-6ubuntu0.2
https://launchpad.net/ubuntu/+source/perl/5.18.2-2ubuntu1.1
https://launchpad.net/ubuntu/+source/perl/5.14.2-6ubuntu2.5
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