-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ________________________________________________________________________ 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-2003.043 25-Sep-2003 ________________________________________________________________________ Package: proftpd Vulnerability: arbitrary code execution OpenPKG Specific: no Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= proftpd-1.2.9rc2-20030911 >= proftpd-1.2.9rc2-20030923 OpenPKG 1.3 <= proftpd-1.2.8-1.3.0 >= proftpd-1.2.8-1.3.1 OpenPKG 1.2 <= proftpd-1.2.7-1.2.0 >= proftpd-1.2.7-1.2.1 Dependent Packages: none Description: According to an ISS X-Force security advisory [0], a vulnerability exists in the ProFTPD FTP server [1], versions between 1.2.7 and 1.2.9rc2 (both inclusive). It can be triggered by remote attackers when transferring files from the FTP server in ASCII mode. To trigger the vulnerability, the attacker must have the ability to first upload a file to the server (not necessarily via FTP), and then attempt to download the same file via FTP. During ASCII transfer, file data is examined in 1024 byte chunks to check for newline characters. The translation of these newline characters is not handled correctly, and a buffer overflow can manifest if ProFTPD parses a specially crafted file. The Common Vulnerabilities and Exposures (CVE) project assigned the id CAN-2003-0831 [2] to the problem. Please check whether you are affected by running "<prefix>/bin/rpm -q proftpd". If you have the "proftpd" 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 current release OpenPKG 1.3, perform the following operations to permanently fix the security problem (for other releases adjust accordingly). $ ftp ftp.openpkg.org ftp> bin ftp> cd release/1.3/UPD ftp> get proftpd-1.2.8-1.3.1.src.rpm ftp> bye $ <prefix>/bin/rpm -v --checksig proftpd-1.2.8-1.3.1.src.rpm $ <prefix>/bin/rpm --rebuild proftpd-1.2.8-1.3.1.src.rpm $ su - # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/proftpd-1.2.8-1.3.1.*.rpm ________________________________________________________________________ References: [0] http://xforce.iss.net/xforce/alerts/id/154 [1] http://www.proftpd.org/ [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0831 [3] http://www.openpkg.org/tutorial.html#regular-source [4] http://www.openpkg.org/tutorial.html#regular-binary [5] ftp://ftp.openpkg.org/release/1.2/UPD/proftpd-1.2.7-1.2.1.src.rpm [6] ftp://ftp.openpkg.org/release/1.3/UPD/proftpd-1.2.8-1.3.1.src.rpm [7] ftp://ftp.openpkg.org/release/1.2/UPD/ [8] ftp://ftp.openpkg.org/release/1.3/UPD/ [9] http://www.openpkg.org/security.html#signature ________________________________________________________________________ For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (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@openpkg.org> iD8DBQE/cp2RgHWT4GPEy58RAkMpAJ44rts7A+xnFwvAYfaeOw7A/RlP7ACg41l0 HI21gWgPtilljTqbNfadgAw= =HdGn -----END PGP SIGNATURE-----
