-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ________________________________________________________________________ OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org openpkg-security@xxxxxxxxxxx openpkg@xxxxxxxxxxx OpenPKG-SA-2005.003 17-Jan-2005 ________________________________________________________________________ Package: a2ps Vulnerability: arbitrary code execution OpenPKG Specific: no Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= a2ps-4.13b-20040818 >= a2ps-4.13b-20050117 OpenPKG 2.2 <= a2ps-4.13b-2.2.0 >= a2ps-4.13b-2.2.1 OpenPKG 2.1 <= a2ps-4.13b-2.1.0 >= a2ps-4.13b-2.1.1 Dependent Packages: none Description: Rudolf Polzer discovered [0] a vulnerability in GNU a2ps [1], a converter and pretty-printer for many formats to PostScript. The program does not escape shell meta characters properly which could lead to the execution of arbitrary commands as a privileged user if a2ps is installed as a printer filter. a2ps allows remote attackers to execute arbitrary commands via shell metacharacters in the filename. The Common Vulnerabilities and Exposures (CVE) project assigned the identifier CAN-2004-1170 [2] to the problem. Please check whether you are affected by running "<prefix>/bin/openpkg rpm -q a2ps". If you have the "a2ps" 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 2.2, perform the following operations to permanently fix the security problem (for other releases adjust accordingly). $ ftp ftp.openpkg.org ftp> bin ftp> cd release/2.2/UPD ftp> get a2ps-4.13b-2.2.1.src.rpm ftp> bye $ <prefix>/bin/openpkg rpm -v --checksig a2ps-4.13b-2.2.1.src.rpm $ <prefix>/bin/openpkg rpm --rebuild a2ps-4.13b-2.2.1.src.rpm $ su - # <prefix>/bin/openpkg rpm -Fvh <prefix>/RPM/PKG/a2ps-4.13b-2.2.1.*.rpm ________________________________________________________________________ References: [0] http://archives.neohapsis.com/archives/fulldisclosure/2004-08/1026.html [1] http://www.inf.enst.fr/~demaille/a2ps/ [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1170 [3] http://www.openpkg.org/tutorial.html#regular-source [4] http://www.openpkg.org/tutorial.html#regular-binary [5] ftp://ftp.openpkg.org/release/2.2/UPD/a2ps-4.13b-2.2.1.src.rpm [6] ftp://ftp.openpkg.org/release/2.1/UPD/a2ps-4.13b-2.1.1.src.rpm [7] ftp://ftp.openpkg.org/release/2.2/UPD/ [8] ftp://ftp.openpkg.org/release/2.1/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. ________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Comment: OpenPKG <openpkg@xxxxxxxxxxx> iD8DBQFB67F5gHWT4GPEy58RAiuUAKCaVwm6qztuFo7Gx7aZP6ZrITKjgQCfdGrL ZrkstKQlbfIuKDISsjhjYHE= =+cr1 -----END PGP SIGNATURE-----
