Perl programs could be made to crash or run programs if they receive specially crafted network traffic or other input.
It was discovered that the decode_xs function in the Encode module is vulnerable to a heap-based buffer overflow via a crafted Unicode string. An attacker could use this overflow to cause a denial of service. (CVE-2011-2939)
30 November 2012
A security issue affects these releases of Ubuntu and its derivatives:
Perl programs could be made to crash or run programs if they receive specially crafted network traffic or other input.
It was discovered that the decode_xs function in the Encode module is vulnerable to a heap-based buffer overflow via a crafted Unicode string. An attacker could use this overflow to cause a denial of service. (CVE-2011-2939)
It was discovered that the ‘new’ constructor in the Digest module is vulnerable to an eval injection. An attacker could use this to execute arbitrary code. (CVE-2011-3597)
It was discovered that Perl’s ‘x’ string repeat operator is vulnerable to a heap-based buffer overflow. An attacker could use this to execute arbitrary code. (CVE-2012-5195)
Ryo Anazawa discovered that the CGI.pm module does not properly escape newlines in Set-Cookie or P3P (Platform for Privacy Preferences Project) headers. An attacker could use this to inject arbitrary headers into responses from applications that use CGI.pm. (CVE-2012-5526)
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.
Perl programs need to be restarted after a standard system update to make all the necessary changes.
Vulmon