Issued:

2011-12-08

Updated:

2011-12-08

RHSA-2011:1797 - Moderate: perl security update

Synopsis

Moderate: perl security update

Type/Severity

Security Advisory Moderate

Topic

Updated perl packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5.

The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

Description

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.

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 This content is not included.https://access.redhat.com/kb/docs/DOC-11259

Affected Products

Updated Packages

• perl-suidperl-5.8.5-57.el4.s390.rpm
• perl-5.8.5-57.el4.s390x.rpm
• perl-5.8.5-57.el4.i386.rpm
• perl-suidperl-5.8.5-57.el4.s390x.rpm
• perl-5.8.5-57.el4.ia64.rpm
• perl-suidperl-5.8.5-57.el4.ia64.rpm
• perl-suidperl-5.8.5-57.el4.x86_64.rpm
• perl-suidperl-5.8.8-32.el5_7.6.x86_64.rpm
• perl-5.8.8-32.el5_7.6.i386.rpm
• perl-5.8.8-32.el5_7.6.src.rpm
• perl-5.8.8-32.el5_7.6.s390x.rpm
• perl-5.8.5-57.el4.s390.rpm
• perl-5.8.5-57.el4.src.rpm
• perl-5.8.5-57.el4.ppc.rpm
• perl-suidperl-5.8.8-32.el5_7.6.i386.rpm
• perl-suidperl-5.8.8-32.el5_7.6.s390x.rpm
• perl-5.8.8-32.el5_7.6.ppc.rpm
• perl-suidperl-5.8.5-57.el4.i386.rpm
• perl-5.8.8-32.el5_7.6.ia64.rpm
• perl-suidperl-5.8.8-32.el5_7.6.ia64.rpm
• perl-5.8.5-57.el4.x86_64.rpm
• perl-suidperl-5.8.5-57.el4.ppc.rpm
• perl-5.8.8-32.el5_7.6.x86_64.rpm
• perl-suidperl-5.8.8-32.el5_7.6.ppc.rpm

Fixes

• This content is not included.BZ - 658976
• This content is not included.BZ - 743010

CVEs

• CVE-2010-2761
• CVE-2010-4410
• CVE-2011-3597

References

• https://access.redhat.com/security/updates/classification/#moderate

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.