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Ubuntu Security Notice USN-3478-2
November 13, 2017

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

- Ubuntu 12.04 ESM

Summary:

Perl could be made to crash if it received specially crafted
input.

Software Description:
- perl: Practical Extraction and Report Language

Details:

USN-3478-1 fixed two vulnerabilities in Perl. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

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, or possibly execute arbitrary code.
(CVE-2017-12883)

Update instructions:

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

Ubuntu 12.04 ESM:
 perl=C2=A05.14.2-6ubuntu2.6

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

References:
 https://www.ubuntu.com/usn/usn-3478-2
 https://www.ubuntu.com/usn/usn-3478-1
 CVE-2017-12883