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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-2004.042 15-Sep-2004
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Package: aspell
Vulnerability: arbitrary code execution
OpenPKG Specific: no
Affected Releases: Affected Packages: Corrected Packages:
OpenPKG CURRENT <= aspell-0.50.5-20040310 >= aspell-0.60-20040827
OpenPKG 2.1 <= aspell-0.50.5-2.1.0 >= aspell-0.50.5-2.1.1
OpenPKG 2.0 <= aspell-0.50.5-2.0.0 >= aspell-0.50.5-2.0.1
Dependent Packages: none
Description:
According to a security advisory from shaun2k2 [0], multiple
stack-based buffer overflows exists in the "word-list-compress"
utility from the spell-checker GNU Aspell [1]. By providing a
specially crafted word list containing an overly long string (more
than 256 bytes), an attacker can cause a buffer overflow and execute
arbitrary code. This allows an attacker to execute arbitrary code via
a long entry in the wordlist. The Common Vulnerabilities and Exposures
(CVE) project assigned the id CAN-2004-0548 [2] to the problem.
Please check whether you are affected by running "/bin/openpkg
rpm -q aspell". If you have the "aspell" package installed and its
version is affected (see above), we recommend that you immediately
upgrade it (see Solution) and its dependent packages (see above), if
any, too [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 2.1, 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 aspell-0.50.5-2.1.1.src.rpm
ftp> bye
$ /bin/openpkg rpm -v --checksig aspell-0.50.5-2.1.1.src.rpm
$ /bin/openpkg rpm --rebuild aspell-0.50.5-2.1.1.src.rpm
$ su -
# /bin/openpkg rpm -Fvh /RPM/PKG/aspell-0.50.5-2.1.1.*.rpm
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References:
[0] http://marc.theaimsgroup.com/?l=bugtraq&m=108675120224531&w=2
[1] http://aspell.net/
[2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0548
[3] http://www.openpkg.org/tutorial.html#regular-source
[4] http://www.openpkg.org/tutorial.html#regular-binary
[5] ftp://ftp.openpkg.org/release/2.1/UPD/aspell-0.50.5-2.1.1.src.rpm
[6] ftp://ftp.openpkg.org/release/2.0/UPD/aspell-0.50.5-2.0.1.src.rpm
[7] ftp://ftp.openpkg.org/release/2.1/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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