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Category:   Application (Generic)  >   CVS Vendors:   GNU [multiple authors]
(Red Hat Issues Fix) CVS Heap Overflow in proxy_connect() Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1026720
SecurityTracker URL:  http://securitytracker.com/id/1026720
CVE Reference:   CVE-2012-0804   (Links to External Site)
Date:  Feb 22 2012
Impact:   Execution of arbitrary code via network, User access via network

Version(s): 1.11.23
Description:   A vulnerability was reported in CVS. A remote user can execute arbitrary code on the target system.

A remote HTTP proxy server can return a specially crafted HTTP response code to trigger a heap overflow and execute arbitrary code on the target client system.

The vulnerability resides in the proxy_connect() function in 'src/client.c'.

Impact:   A remote HTTP proxy server can execute arbitrary code on the target system.
Solution:   Red Hat has issued a fix.

The Red Hat advisory is available at:

https://rhn.redhat.com/errata/RHSA-2012-0321.html

Vendor URL:  www.nongnu.org/cvs/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Red Hat Enterprise)
Underlying OS Comments:  5, 6

Message History:   This archive entry is a follow-up to the message listed below.
Feb 22 2012 CVS Heap Overflow in proxy_connect() Lets Remote Users Execute Arbitrary Code



 Source Message Contents

Subject:  [RHSA-2012:0321-01] Moderate: cvs security update

-----BEGIN PGP SIGNED MESSAGE-----
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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: cvs security update
Advisory ID:       RHSA-2012:0321-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2012-0321.html
Issue date:        2012-02-21
CVE Names:         CVE-2012-0804 
=====================================================================

1. Summary:

Updated cvs packages that fix one security issue are now available for
Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.

2. Relevant releases/architectures:

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

3. Description:

Concurrent Version System (CVS) is a version control system that can record
the history of your files.

A heap-based buffer overflow flaw was found in the way the CVS client
handled responses from HTTP proxies. A malicious HTTP proxy could use this
flaw to cause the CVS client to crash or, possibly, execute arbitrary code
with the privileges of the user running the CVS client. (CVE-2012-0804)

All users of cvs are advised to upgrade to these updated packages, which
contain a patch to correct this issue.

4. 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

5. Bugs fixed (http://bugzilla.redhat.com/):

784141 - CVE-2012-0804 cvs: client proxy_connect heap-based buffer overflow

6. Package List:

Red Hat Enterprise Linux Desktop (v. 5 client):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/cvs-1.11.22-11.el5_8.1.src.rpm

i386:
cvs-1.11.22-11.el5_8.1.i386.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.i386.rpm
cvs-inetd-1.11.22-11.el5_8.1.i386.rpm

x86_64:
cvs-1.11.22-11.el5_8.1.x86_64.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.x86_64.rpm
cvs-inetd-1.11.22-11.el5_8.1.x86_64.rpm

Red Hat Enterprise Linux (v. 5 server):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/cvs-1.11.22-11.el5_8.1.src.rpm

i386:
cvs-1.11.22-11.el5_8.1.i386.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.i386.rpm
cvs-inetd-1.11.22-11.el5_8.1.i386.rpm

ia64:
cvs-1.11.22-11.el5_8.1.ia64.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.ia64.rpm
cvs-inetd-1.11.22-11.el5_8.1.ia64.rpm

ppc:
cvs-1.11.22-11.el5_8.1.ppc.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.ppc.rpm
cvs-inetd-1.11.22-11.el5_8.1.ppc.rpm

s390x:
cvs-1.11.22-11.el5_8.1.s390x.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.s390x.rpm
cvs-inetd-1.11.22-11.el5_8.1.s390x.rpm

x86_64:
cvs-1.11.22-11.el5_8.1.x86_64.rpm
cvs-debuginfo-1.11.22-11.el5_8.1.x86_64.rpm
cvs-inetd-1.11.22-11.el5_8.1.x86_64.rpm

Red Hat Enterprise Linux Desktop (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/cvs-1.11.23-11.el6_2.1.src.rpm

i386:
cvs-1.11.23-11.el6_2.1.i686.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.i686.rpm

x86_64:
cvs-1.11.23-11.el6_2.1.x86_64.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.x86_64.rpm

Red Hat Enterprise Linux HPC Node (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6ComputeNode/en/os/SRPMS/cvs-1.11.23-11.el6_2.1.src.rpm

x86_64:
cvs-1.11.23-11.el6_2.1.x86_64.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/cvs-1.11.23-11.el6_2.1.src.rpm

i386:
cvs-1.11.23-11.el6_2.1.i686.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.i686.rpm

ppc64:
cvs-1.11.23-11.el6_2.1.ppc64.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.ppc64.rpm

s390x:
cvs-1.11.23-11.el6_2.1.s390x.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.s390x.rpm

x86_64:
cvs-1.11.23-11.el6_2.1.x86_64.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 6):

Source:
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/cvs-1.11.23-11.el6_2.1.src.rpm

i386:
cvs-1.11.23-11.el6_2.1.i686.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.i686.rpm

x86_64:
cvs-1.11.23-11.el6_2.1.x86_64.rpm
cvs-debuginfo-1.11.23-11.el6_2.1.x86_64.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.redhat.com/security/data/cve/CVE-2012-0804.html
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

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

Copyright 2012 Red Hat, Inc.
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