[OpenPKG-SA-2005.016] OpenPKG Security Advisory (fetchmail)
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OpenPKG Security Advisory The OpenPKG Project
http://www.openpkg.org/security.html http://www.openpkg.org
openpkg-security@xxxxxxxxxxx openpkg@xxxxxxxxxxx
OpenPKG-SA-2005.016 28-Jul-2005
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Package: fetchmail
Vulnerability: denial of service
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= fetchmail-6.2.5-20050311 >= fetchmail-6.2.5-20050728
OpenPKG 2.4 <= fetchmail-6.2.5-2.4.0 >= fetchmail-6.2.5-2.4.1
OpenPKG 2.3 <= fetchmail-6.2.5-2.3.0 >= fetchmail-6.2.5-2.3.1
Dependent Packages: none
Description:
Ross Boylan reported a bug [0] in fetchmail [1] which turned out
being a remote buffer overflow vulnerability. A malicious POP3 server
could send a carefully crafted message and cause a denial of service
and possibly execute arbitrary code via long UIDL responses. The
Common Vulnerabilities and Exposures (CVE) project assigned the id
CAN-2005-2335 [2] to the problem.
Please check whether you are affected by running "<prefix>/bin/openpkg
rpm -q fetchmail". If you have the "fetchmail" 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 2.4, perform the
following operations to permanently fix the security problem (for
other releases adjust accordingly).
$ ftp ftp.openpkg.org
ftp> bin
ftp> cd release/2.4/UPD
ftp> get fetchmail-6.2.5-2.4.1.src.rpm
ftp> bye
$ <prefix>/bin/openpkg rpm -v --checksig fetchmail-6.2.5-2.4.1.src.rpm
$ <prefix>/bin/openpkg rpm --rebuild fetchmail-6.2.5-2.4.1.src.rpm
$ su -
# <prefix>/bin/openpkg rpm -Fvh <prefix>/RPM/PKG/fetchmail-6.2.5-2.4.1.*.rpm
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References:
[0] http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=212762
[1] http://www.catb.org/~esr/fetchmail/
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-2335
[3] http://www.openpkg.org/tutorial.html#regular-source
[4] http://www.openpkg.org/tutorial.html#regular-binary
[5] ftp://ftp.openpkg.org/release/2.4/UPD/fetchmail-6.2.5-2.4.1.src.rpm
[6] ftp://ftp.openpkg.org/release/2.3/UPD/fetchmail-6.2.5-2.3.1.src.rpm
[7] ftp://ftp.openpkg.org/release/2.4/UPD/
[8] ftp://ftp.openpkg.org/release/2.3/UPD/
[9] http://www.openpkg.org/security.html#signature
________________________________________________________________________
For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@xxxxxxxxxxx>" (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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