(Red Hat Issues Fix) mod_perl Input Validation Flaw in PerlRun Module Lets Remote Users Deny Service
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SecurityTracker Alert ID: 1018261 |
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SecurityTracker URL: http://securitytracker.com/id/1018261
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CVE Reference:
CVE-2007-1349
(Links to External Site)
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Date: Jun 18 2007
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 1.30
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Description:
A vulnerability was reported in mod_perl. A remote user can cause denial of service conditions.
The Apache::PerlRun module does not properly escape user-supplied data in the PATH_INFO variable before using the data in evaluating a regular expression. A remote user can request a specially crafted URL to potentially cause mod_perl to consume excessive CPU resources on the target system.
Randal L. Schwartz reported this vulnerability in March 2007.
The original advisory is available at:
http://www.gossamer-threads.com/lists/modperl/modperl/92739
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Impact:
A remote user can cause excessive resource consumption on the target system.
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Solution:
Red Hat has released a fix.
The Red Hat advisory is available at:
https://rhn.redhat.com/errata/RHSA-2007-0486.html
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Vendor URL: perl.apache.org/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Red Hat Enterprise)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Mon, 18 Jun 2007 05:18:36 -0400
Subject: [RHSA-2007:0486-01] Moderate: mod_perl security update
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-----BEGIN PGP SIGNED MESSAGE-----
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Red Hat Security Advisory
Synopsis: Moderate: mod_perl security update
Advisory ID: RHSA-2007:0486-01
Advisory URL: https://rhn.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
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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
http://kbase.redhat.com/faq/FAQ_58_10188
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:
ftp://updates.redhat.com/enterprise/2.1AS/en/os/SRPMS/mod_perl-1.26-8.el2.src.rpm
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:
ftp://updates.redhat.com/enterprise/2.1AW/en/os/SRPMS/mod_perl-1.26-8.el2.src.rpm
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:
ftp://updates.redhat.com/enterprise/2.1ES/en/os/SRPMS/mod_perl-1.26-8.el2.src.rpm
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:
ftp://updates.redhat.com/enterprise/2.1WS/en/os/SRPMS/mod_perl-1.26-8.el2.src.rpm
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://www.redhat.com/security/team/key/#package
7. References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1349
http://www.redhat.com/security/updates/classification/#moderate
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://www.redhat.com/security/team/contact/
Copyright 2007 Red Hat, Inc.
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