full-disclosure - [OpenPKG-SA-2003.037] OpenPKG Security Advisory (sendmail)

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Message-ID: <20030828084115.GA20241@en4.engelschall.com>
From: openpkg at openpkg.org (OpenPKG)
Subject: [OpenPKG-SA-2003.037] OpenPKG Security Advisory (sendmail)

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________________________________________________________________________

OpenPKG Security Advisory                            The OpenPKG Project
http://www.openpkg.org/security.html              http://www.openpkg.org
openpkg-security@...npkg.org                         openpkg@...npkg.org
OpenPKG-SA-2003.037                                          28-Aug-2003
________________________________________________________________________

Package:             sendmail
Vulnerability:       Denial of Service
OpenPKG Specific:    no

Affected Releases:   Affected Packages:        Corrected Packages:
OpenPKG CURRENT      none                      N.A.
OpenPKG 1.3          none                      N.A.
OpenPKG 1.2          <= sendmail-8.12.7-1.2.2  >= sendmail-8.12.7-1.2.3

Dependent Packages:  none

Description:
  Oleg Bulyzhin reported to FreeBSD [1] a confirmed [2] Denial of
  Service (DoS) vulnerability in all version of the Sendmail MTA [0]
  earlier than 8.12.9. Due to a wrong initialization of an internal
  structure, if Sendmail gets a bad DNS reply (with actual reply size
  not equal the announced reply size), it later calls free() on a random
  address. This usually cause Sendmail to crash.

  Please check whether you are affected by running "<prefix>/bin/rpm
  -q sendmail". If you have the "sendmail" 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], fetch it from the OpenPKG FTP service [6] or a mirror location,
  verify its integrity [7], build a corresponding binary RPM from it [3]
  and update your OpenPKG installation by applying the binary RPM [4].
  For the affected release OpenPKG 1.2, perform the following operations
  to permanently fix the security problem (for other releases adjust
  accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/1.2/UPD
  ftp> get sendmail-8.12.7-1.2.3.src.rpm
  ftp> bye
  $ <prefix>/bin/rpm -v --checksig sendmail-8.12.7-1.2.3.src.rpm
  $ <prefix>/bin/rpm --rebuild sendmail-8.12.7-1.2.3.src.rpm
  $ su -
  # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/sendmail-8.12.7-1.2.3.*.rpm
________________________________________________________________________

References:
  [0] http://www.sendmail.org/
  [1] http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/54367
  [2] http://www.sendmail.org/dnsmap1.html
  [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/sendmail-8.12.7-1.2.3.src.rpm
  [6] ftp://ftp.openpkg.org/release/1.2/UPD/
  [7] http://www.openpkg.org/security.html#signature
________________________________________________________________________

For security reasons, this advisory was digitally signed with the
OpenPGP public key "OpenPKG <openpkg@...npkg.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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