Updated mod_perl packages that fix a security issue are now available for Red Hat Enterprise Linux 2.1. The Apache::PerlRun module was found to not properly escape PATH_INFO before being used in a regular expression. If a server is configured to use Apache::PerlRun, an attacker could request a carefully crafted URI causing resource consumption, which could lead to a denial of service. This update has been rated as having moderate security impact by the Red Hat Security Response Team.

- ---------------------------------------------------------------------                   Red Hat Security Advisory

Synopsis:          Moderate: mod_perl security update
Advisory ID:       RHSA-2007:0486-01
Advisory URL:      https://access.redhat.com/errata/RHSA-2007:0486.html
Issue date:        2007-06-18
Updated on:        2007-06-18
Product:           Red Hat Enterprise Linux
CVE Names:         CVE-2007-1349 
- ---------------------------------------------------------------------1. Summary:

Updated mod_perl packages that fix a security issue are now available for Red
Hat Enterprise Linux 2.1.

This update has been rated as having moderate security impact by the Red
Hat Security Response Team.

2. Relevant releases/architectures:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1 - i386, ia64
Red Hat Linux Advanced Workstation 2.1 - ia64
Red Hat Enterprise Linux ES version 2.1 - i386
Red Hat Enterprise Linux WS version 2.1 - i386

3. Problem description:

Mod_perl incorporates a Perl interpreter into the Apache web server,
so that the Apache HTTP server can directly execute Perl code.

The Apache::PerlRun module was found to not properly escape PATH_INFO
before being used in a regular expression. If a server is configured to
use Apache::PerlRun, an attacker could request a carefully crafted URI
causing resource consumption, which could lead to a denial of service
(CVE-2007-1349).

Users of mod_perl should update to these erratum packages which contain a
backported fix to correct this issue.

4. Solution:

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

This update is available via Red Hat Network.  Details on how to use 
the Red Hat Network to apply this update are available at

5. Bug IDs fixed (http://bugzilla.redhat.com/):

240423 - CVE-2007-1349 mod_perl PerlRun denial of service

6. RPMs required:

Red Hat Enterprise Linux AS (Advanced Server) version 2.1:

SRPMS:
ba662e554fb38d47a75b5e1e38d66feb  mod_perl-1.26-8.el2.src.rpm

i386:
944c97379c59adeb21d3e714f5c0e88d  mod_perl-1.26-8.el2.i386.rpm

ia64:
378a98638750c8e1aacd05723be0f70a  mod_perl-1.26-8.el2.ia64.rpm

Red Hat Linux Advanced Workstation 2.1:

SRPMS:
ba662e554fb38d47a75b5e1e38d66feb  mod_perl-1.26-8.el2.src.rpm

ia64:
378a98638750c8e1aacd05723be0f70a  mod_perl-1.26-8.el2.ia64.rpm

Red Hat Enterprise Linux ES version 2.1:

SRPMS:
ba662e554fb38d47a75b5e1e38d66feb  mod_perl-1.26-8.el2.src.rpm

i386:
944c97379c59adeb21d3e714f5c0e88d  mod_perl-1.26-8.el2.i386.rpm

Red Hat Enterprise Linux WS version 2.1:

SRPMS:
ba662e554fb38d47a75b5e1e38d66feb  mod_perl-1.26-8.el2.src.rpm

i386:
944c97379c59adeb21d3e714f5c0e88d  mod_perl-1.26-8.el2.i386.rpm

These packages are GPG signed by Red Hat for security.  Our key and 
details on how to verify the signature are available from
https://access.redhat.com/security/team/key#package

7. References:

https://www.cve.org/CVERecord?id=CVE-2007-1349
https://access.redhat.com/security/updates/classification#moderate

8. Contact:

The Red Hat security contact is .  More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2007 Red Hat, Inc.