USN-1643-1: Perl vulnerabilities
30 November 2012
Perl programs could be made to crash or run programs if they receive specially crafted network traffic or other input.
- perl - Larry Wall's Practical Extraction and Report Language
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.
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:
Perl programs need to be restarted after a standard system update to
make all the necessary changes.