OpenPKG Alert: OpenPKG Security Advisory (cvs)
Sebastian Krahmer from the SuSE Security Team discovered [1] a flaw in Concurrent Versions System (CVS) [0] clients where RCS "diff files" can create files with absolute pathnames. An attacker could create a fake malicious CVS server that would cause arbitrary files to be created or overwritten when a victim connects to it. The Common Vulnerabilities and Exposures (CVE) project assigned the id CAN-2004-0180 [2] to the problem.
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OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
[e-mail:openpkg-security@openpkg.org] [e-mail:openpkg@openpkg.org]
OpenPKG-SA-2004.013 14-Apr-2004
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Package: cvs
Vulnerability: remote code execution
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= cvs-1.12.6-20040413 >= cvs-1.12.7-20040414
OpenPKG 2.0 <= cvs-1.12.5-2.0.0 >= cvs-1.12.5-2.0.1
OpenPKG 1.3 <= cvs-1.12.1-1.3.3 >= cvs-1.12.1-1.3.4
Dependent Packages: none
Description:
Sebastian Krahmer from the SuSE Security Team discovered [1] a flaw
in Concurrent Versions System (CVS) [0] clients where RCS "diff
files" can create files with absolute pathnames. An attacker could
create a fake malicious CVS server that would cause arbitrary files
to be created or overwritten when a victim connects to it. The
Common Vulnerabilities and Exposures (CVE) project assigned the id
CAN-2004-0180 [2] to the problem.
Please check whether you are affected by running "/bin/rpm
-q cvs". If you have the "cvs" package installed and its version is
affected (see above), we recommend that you immediately upgrade it
(see Solution). [3][4]
Solution:
Select the updated source RPM appropriate for your OpenPKG release
[5][6], fetch it from the OpenPKG FTP service [7][8] or a mirror
location, verify its integrity [9], build a corresponding binary RPM
from it [3] and update your OpenPKG installation by applying the
binary RPM [4]. For the most recent release OpenPKG 2.0, perform the
following operations to permanently fix the security problem (for
other releases adjust accordingly).
$ ftp http://ftp.openpkg.org
ftp> bin
ftp> cd release/2.0/UPD
ftp> get cvs-1.12.5-2.0.1.src.rpm
ftp> bye
$ /bin/openpkg rpm -v --checksig cvs-1.12.5-2.0.1.src.rpm
$ /bin/openpkg rpm --rebuild cvs-1.12.5-2.0.1.src.rpm
$ su -
# /bin/openpkg rpm -Fvh /RPM/PKG/cvs-1.12.5-2.0.1.*.rpm
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References:
[0] http://www.cvshome.org/
[1] http://www.suse.com/de/security/2004_08_cvs.html
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0180
[3] http://www.openpkg.org/tutorial.html#regular-source
[4] http://www.openpkg.org/tutorial.html#regular-binary
[5] ftp://ftp.openpkg.org/release/1.3/UPD/cvs-1.12.1-1.3.4.src.rpm
[6] ftp://ftp.openpkg.org/release/2.0/UPD/cvs-1.12.5-2.0.1.src.rpm
[7] ftp://ftp.openpkg.org/release/1.3/UPD/
[8] ftp://ftp.openpkg.org/release/2.0/UPD/
[9] http://www.openpkg.org/security.html#signature
________________________________________________________________________
For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG " (ID 63C4CB9F) of the
OpenPKG project which you can retrieve from http://pgp.openpkg.org and
hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/
for details on how to verify the integrity of this advisory.
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