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OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
openpkg-security@openpkg.org openpkg@openpkg.org
OpenPKG-SA-2004.039 13-Sep-2004
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Package: kerberos
Vulnerability: arbitrary code execution, denial of service
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= kerberos-1.3.4-20040730 >= kerberos-1.3.4-20040901
OpenPKG 2.1 <= kerberos-1.3.4-2.1.0 >= kerberos-1.3.4-2.1.1
OpenPKG 2.0 <= kerberos-1.3.1-2.0.1 >= kerberos-1.3.1-2.0.2
Dependent Packages: none
Description:
According to two vendor security advisories [1][2], multiple
vulnerabilities exists in the Kerberos [0] network authentication
system. The first set of problems are double-free issues in the KDC
and libraries. The second problem is a denial-of-service vulnerability
in the ASN.1 decoder. The Common Vulnerabilities and Exposures (CVE)
project assigned the ids CAN-2004-0642 [3], CAN-2004-0643 [4],
CAN-2004-0644 [5] and CAN-2004-0772 [6] to the problems.
Please check whether you are affected by running "/bin/openpkg
rpm -q kerberos". If you have the "kerberos" package installed and its
version is affected (see above), we recommend that you immediately
upgrade it (see Solution) [7][8].
Solution:
Select the updated source RPM appropriate for your OpenPKG release
[9][10], fetch it from the OpenPKG FTP service [11][12] or a mirror
location, verify its integrity [13], build a corresponding binary
RPM from it [7] and update your OpenPKG installation by applying the
binary RPM [8]. For the most recent release OpenPKG 2.1, perform the
following operations to permanently fix the security problem (for
other releases adjust accordingly).
$ ftp ftp.openpkg.org
ftp> bin
ftp> cd release/2.1/UPD
ftp> get kerberos-1.3.4-2.1.1.src.rpm
ftp> bye
$ /bin/openpkg rpm -v --checksig kerberos-1.3.4-2.1.1.src.rpm
$ /bin/openpkg rpm --rebuild kerberos-1.3.4-2.1.1.src.rpm
$ su -
# /bin/openpkg rpm -Fvh /RPM/PKG/kerberos-1.3.4-2.1.1.*.rpm
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References:
[0] http://web.mit.edu/kerberos/
[1] http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-002-d blfree.txt
[2] http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2004-003-a sn1.txt
[3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0642
[4] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0643
[5] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0644
[6] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0772
[7] http://www.openpkg.org/tutorial.html#regular-source
[8] http://www.openpkg.org/tutorial.html#regular-binary
[9] ftp://ftp.openpkg.org/release/2.1/UPD/kerberos-1.3.4-2.1.1.src.rpm
[10] ftp://ftp.openpkg.org/release/2.0/UPD/kerberos-1.3.1-2.0.2.src.rpm
[11] ftp://ftp.openpkg.org/release/2.1/UPD/
[12] ftp://ftp.openpkg.org/release/2.0/UPD/
[13] 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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