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Red Hat: RHSA-2011:1797-01 Moderate: Perl Execution Flaw

red hat
Calendar Grey December 8, 2011
Dist Redhat Esm H88
A significant security patch for Perl under Red Hat addresses vulnerabilities related to command execution errors and issues with HTTP response splitting.
Updated perl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5

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.
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)
It was found that the Perl CGI module used a hard-coded value for the MIME boundary string in multipart/x-mixed-replace content. A remote attacker could possibly use this flaw to conduct an HTTP response splitting attack via a specially-crafted HTTP request. (CVE-2010-2761)
A CRLF injection flaw was found in the way the Perl CGI module processed a sequence of non-whitespace preceded by newline characters in the header. A remote attacker could use this flaw to conduct an HTTP response splitting attack via a specially-crafted sequence of characters provided to the CGI module. (CVE-2010-4410)
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 Red Hat Enterprise Linux security patch perl execution flaw HTTP splitting

References

https://access.redhat.com/security/cve/CVE-2010-2761 https://access.redhat.com/security/cve/CVE-2010-4410 https://access.redhat.com/security/cve/CVE-2011-3597 https://access.redhat.com/security/updates/classification/#moderate

Package List

Red Hat Enterprise Linux AS version 4:
Source:
i386: perl-5.8.5-57.el4.i386.rpm perl-debuginfo-5.8.5-57.el4.i386.rpm perl-suidperl-5.8.5-57.el4.i386.rpm
ia64: perl-5.8.5-57.el4.ia64.rpm perl-debuginfo-5.8.5-57.el4.ia64.rpm perl-suidperl-5.8.5-57.el4.ia64.rpm
ppc: perl-5.8.5-57.el4.ppc.rpm perl-debuginfo-5.8.5-57.el4.ppc.rpm perl-suidperl-5.8.5-57.el4.ppc.rpm
s390: perl-5.8.5-57.el4.s390.rpm perl-debuginfo-5.8.5-57.el4.s390.rpm perl-suidperl-5.8.5-57.el4.s390.rpm
s390x: perl-5.8.5-57.el4.s390x.rpm perl-debuginfo-5.8.5-57.el4.s390x.rpm perl-suidperl-5.8.5-57.el4.s390x.rpm
x86_64: perl-5.8.5-57.el4.x86_64.rpm perl-debuginfo-5.8.5-57.el4.x86_64.rpm perl-suidperl-5.8.5-57.el4.x86_64.rpm
Red Hat Enterprise Linux Desktop version 4:
Source:
i386: perl-5.8.5-57.el4.i386.rpm perl-debuginfo-5.8.5-57.el4.i386.rpm perl-suidperl-5.8.5-57.el4.i386.rpm
x86_64: perl-5.8.5-57.el4.x86_64.rpm perl-debuginfo-5.8.5-57.el4.x86_64.rpm perl-suidperl-5.8.5-57.el4.x86_64.rpm
Red Hat Enterprise Linux ES version 4:
Source:
i386: perl-5.8.5-57.el4.i386.rpm perl-debuginfo-5.8.5-57.el4.i386.rpm perl-suidperl-5.8.5-57.el4.i386.rpm
ia64: perl-5.8.5-57.el4.ia64.rpm perl-debuginfo-5.8.5-57.el4.ia64.rpm perl-suidperl-5.8.5-57.el4.ia64.rpm
x86_64: perl-5.8.5-57.el4.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2011:1797-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2011:1797.html
Issue date: 2011-12-08

Topic

Updated perl packages that fix multiple security issues are now availablefor Red Hat Enterprise Linux 4 and 5.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 Red Hat Enterprise Linux security patch perl execution flaw HTTP splitting

Relevant Releases Architectures

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Red Hat Enterprise Linux AS version 4 - i386, ia64, ppc, s390, s390x, x86_64

Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux Desktop version 4 - i386, x86_64

Red Hat Enterprise Linux ES version 4 - i386, ia64, x86_64

Red Hat Enterprise Linux WS version 4 - i386, ia64, x86_64

Bugs Fixed

658976 - perl-CGI, perl-CGI-Simple: CVE-2010-2761 - hardcoded MIME boundary value for multipart content, CVE-2010-4410 - CRLF injection allowing HTTP response splitting

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

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