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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-2004.020                                          07-May-2004
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Package:             ssmtp
Vulnerability:       denial of service, code execution
OpenPKG Specific:    no

Affected Releases:   Affected Packages:      Corrected Packages:
OpenPKG CURRENT      <= ssmtp-2.48-20040207  >= ssmtp-2.60.8-20040507
OpenPKG 2.0          <= ssmtp-2.48-2.0.0     >= ssmtp-2.48-2.0.1
OpenPKG 1.3          <= ssmtp-2.48-1.3.0     >= ssmtp-2.48-1.3.1

Dependent Packages:  none

Description:
  Two format string bugs were discovered in sSMTP [1], a simple
  sending-only Mail Transport Agent (MTA). Untrusted values in the
  functions die() and log_event() were passed to printf(3)-like
  functions as format strings. These vulnerabilities could potentially
  allow remote mail relays to cause a Denial of Service (DoS) and
  possibly execute arbitrary code. The Common Vulnerabilities and
  Exposures (CVE) project assigned the id CAN-2004-0156 [2] to the
  problem.

  Please check whether you are affected by running "/bin/rpm -q
  ssmtp". If you have the "ssmtp" 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 2.0, perform the
  following operations to permanently fix the security problem (for
  other releases adjust accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/2.0/UPD
  ftp> get ssmtp-2.48-2.0.1.src.rpm
  ftp> bye
  $ /bin/openpkg rpm -v --checksig ssmtp-2.48-2.0.1.src.rpm
  $ /bin/openpkg rpm --rebuild ssmtp-2.48-2.0.1.src.rpm
  $ su -
  # /bin/openpkg rpm -Fvh /RPM/PKG/ssmtp-2.48-2.0.1.*.rpm
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References:
  [1] ftp://ftp.debian.org/debian/pool/main/s/ssmtp/ 
  [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0156 
  [3] http://www.openpkg.org/tutorial.html#regular-source 
  [4] http://www.openpkg.org/tutorial.html#regular-binary 
  [5] ftp://ftp.openpkg.org/release/1.3/UPD/ssmtp-2.48-1.3.1.src.rpm 
  [6] ftp://ftp.openpkg.org/release/2.0/UPD/ssmtp-2.48-2.0.1.src.rpm 
  [7] ftp://ftp.openpkg.org/release/1.3/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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