Red Hat Linux Advisory: Subversion

Red Hat Security Advisory

Synopsis: Updated Subversion packages fix security vulnerability in neon
Advisory ID: RHSA-2004:159-01
Issue date: 2004-04-15
Updated on: 2004-04-15
Product: Red Hat Linux
Keywords:
Cross references:
Obsoletes:
CVE Names: CAN-2004-0179

1. Topic:

Updated Subversion packages that fix a vulnerability in neon, exploitable by a malicious DAV server, are now available.

2. Relevant releases/architectures:

Red Hat Linux 9 - i386

3. Problem description:

Subversion is a concurrent version control system that uses inbuilt code from neon, an HTTP and WebDAV client library.

Versions of the neon client library up to and including 0.24.4 have been found to contain a number of format string bugs. An attacker could create a malicious WebDAV server in such a way as to allow arbitrary code execution on the client should a user connect to it using subversion. The Common Vulnerabilities and Exposures project (cve.mitre.org/) has assigned the name CAN-2004-0179 to this issue.

This update includes a patch to correct this issue, and an upgrade to Subversion 0.27.0, the last version which is compatible with the database schema used by Subversion 0.17.0. Users of Subversion are advised to upgrade to these updated packages.

4. Solution:

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory only contains the desired RPMs.

Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate RPMs being upgraded on your system.

If up2date fails to connect to Red Hat Network due to SSL Certificate Errors, you need to install a version of the up2date client with an updated certificate. The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website:

https://rhn.redhat.com/help/latest-up2date.pxt

5. RPMs required:

Red Hat Linux 9:

SRPMS:
ftp://updates.redhat.com/9/en/os/SRPMS/subversion-0.27.0-2.src.rpm

i386:
ftp://updates.redhat.com/9/en/os/i386/subversion-0.27.0-2.i386.rpm
ftp://updates.redhat.com/9/en/os/i386/subversion-devel-0.27.0-2.i386.rpm

6. Verification:

MD5 sum Package Name

690c5d22e0f2baaf19f554f3466981b9 9/en/os/SRPMS/subversion-0.27.0-2.src.rpm
2a20d39d786e5ca72617a0719266e01d 9/en/os/i386/subversion-0.27.0-2.i386.rpm
c811a52c5b714e5700afc394f48b4c52 9/en/os/i386/subversion-devel-0.27.0-2.i386.rpm

These packages are GPG signed by Red Hat for security. Our key is available from https://www.redhat.com/security/team/key.html

You can verify each package with the following command:

rpm --checksig -v <filename>

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command:

md5sum <filename>

7. References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0179

8. Contact:

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

Copyright 2004 Red Hat, Inc.