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Red Hat Enterprise Linux 6 RHSA-2011:1424 Moderate: Perl Buffer Overflow

red hat
Calendar Grey November 3, 2011
Dist Redhat Esm H88
A recent update has been released addressing two vulnerabilities in Perl for Red Hat Enterprise Linux 6, categorized with a moderate severity rating.
Updated perl packages that fix two security issues are now available for Red Hat Enterprise Linux 6

Solution

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

Summary

Perl is a high-level programming language commonly used for system administration utilities and web programming.
A heap-based buffer overflow flaw was found in the way Perl decoded Unicode strings. An attacker could create a malicious Unicode string that, when decoded by a Perl program, would cause the program to crash or, potentially, execute arbitrary code with the permissions of the user running the program. (CVE-2011-2939)
It was found that the "new" constructor of the Digest module used its argument as part of the string expression passed to the eval() function. An attacker could possibly use this flaw to execute arbitrary Perl code with the privileges of a Perl program that uses untrusted input as an argument to the constructor. (CVE-2011-3597)
All Perl users should upgrade to these updated packages, which contain backported patches to correct these issues. All running Perl programs must be restarted for this update to take effect.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat buffer overflow code execution perl

References

https://access.redhat.com/security/cve/CVE-2011-2939 https://access.redhat.com/security/cve/CVE-2011-3597 https://access.redhat.com/security/updates/classification#moderate

Package List

Red Hat Enterprise Linux Desktop (v. 6):
Source:
i386: perl-5.10.1-119.el6_1.1.i686.rpm perl-Archive-Extract-0.38-119.el6_1.1.i686.rpm perl-Archive-Tar-1.58-119.el6_1.1.i686.rpm perl-CGI-3.51-119.el6_1.1.i686.rpm perl-CPAN-1.9402-119.el6_1.1.i686.rpm perl-CPANPLUS-0.88-119.el6_1.1.i686.rpm perl-Compress-Raw-Zlib-2.023-119.el6_1.1.i686.rpm perl-Compress-Zlib-2.020-119.el6_1.1.i686.rpm perl-Digest-SHA-5.47-119.el6_1.1.i686.rpm perl-ExtUtils-CBuilder-0.27-119.el6_1.1.i686.rpm perl-ExtUtils-Embed-1.28-119.el6_1.1.i686.rpm perl-ExtUtils-MakeMaker-6.55-119.el6_1.1.i686.rpm perl-ExtUtils-ParseXS-2.2003.0-119.el6_1.1.i686.rpm perl-File-Fetch-0.26-119.el6_1.1.i686.rpm perl-IO-Compress-Base-2.020-119.el6_1.1.i686.rpm perl-IO-Compress-Zlib-2.020-119.el6_1.1.i686.rpm perl-IO-Zlib-1.09-119.el6_1.1.i686.rpm perl-IPC-Cmd-0.56-119.el6_1.1.i686.rpm perl-Locale-Maketext-Simple-0.18-119.el6_1.1.i686.rpm perl-Log-Message-0.02-119.el6_1.1.i686.rpm perl-Log-Message-Simple-0.04-119.el6_1.1.i686.rpm perl-Module-Build-0.3500-119.el6_1.1.i686.rpm perl-Module-CoreList-2.18-119.el6_1.1.i686.rpm perl-Module-Load-0.16-119.el6_1.1.i686.rpm perl-Module-Load-Conditional-0.30-119.el6_1.1.i686.rpm perl-Module-Loaded-0.02-119.el6_1.1.i686.rpm perl-Module-Pluggable-3.90-119.el6_1.1.i686.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1424-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1424.html
Issue date: 2011-11-03

Topic

Updated perl packages that fix two security issues are now available forRed Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. Common Vulnerability Scoring System (CVSS) base scores,which give detailed severity ratings, are available for each vulnerabilityfrom the CVE links in the References section.

Topics%20covered

Topics Covered

security advisory moderate security update Red Hat buffer overflow code execution perl

Relevant Releases Architectures

Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64

Red Hat Enterprise Linux HPC Node (v. 6) - x86_64

Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

Bugs Fixed

731246 - CVE-2011-2939 Perl decode_xs heap-based buffer overflow

743010 - CVE-2011-3597 Perl Digest improper control of generation of code

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