TUCoPS :: Linux :: Apps N-Z :: bt1206.txt

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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-2003.043 25-Sep-2003
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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
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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.
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