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[OpenPKG-SA-2002.009] OpenPKG Security Advisory (apache)
From: OpenPKG <openpkg () openpkg org>
Date: Fri, 4 Oct 2002 21:53:45 +0200

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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-2002.009                                          04-Oct-2002
________________________________________________________________________

Package:             apache
Vulnerability:       denial of service
OpenPKG Specific:    no

Affected  Releases:  OpenPKG 1.0             OpenPKG 1.1
Affected  Packages:  <= apache-1.3.22-1.0.4  <= apache-1.3.26-1.1.0
Corrected Packages:  >= apache-1.3.22-1.0.5  >= apache-1.3.26-1.1.1
Dependent Packages:  none                    none

Description:
  According to the Apache HTTP Server Project [1][2], there are
  several remotely exploitable vulnerabilities which could allow an
  attacker to enact a denial of service against a server. The Common
  Vulnerabilities and Exposures (CVE) project identified the following
  three vulnerabilities:
  
  1. CAN-2002-0839 [3]: A vulnerability exists on platforms using System
  V shared memory based scoreboards. This vulnerability allows an
  attacker who can execute under the Apache UID to exploit the Apache
  shared memory scoreboard format and send a signal to any process as
  root or cause a local denial of service attack.

  2. CAN-2002-0840 [4]: Apache is susceptible to a cross site scripting
  vulnerability in the default 404 page of any web server hosted on a
  domain that allows wildcard DNS lookups.

  3. CAN-2002-0843 [5]: There were some possible overflows in the
  utility ApacheBench (ab) which could be exploited by a malicious
  server.

  Please check whether you are affected by running "<prefix>/bin/rpm -q
  apache". If you have an affected version of the "apache" package (see
  above), upgrade it according to the solution below. Remember to also
  rebuild and reinstall any dependent OpenPKG packages. [6]

Solution:
  Select the updated source RPM appropriate for your OpenPKG release
  [7][9], fetch it from the OpenPKG FTP service [8][10] or a mirror
  location, verify its integrity [11], build a corresponding binary RPM
  from it and update your OpenPKG installation by finally installing
  the binary RPM [6]. For the latest OpenPKG 1.1 release, perform the
  following operations to permanently fix the security problem (for
  other releases adjust accordingly).

  $ ftp ftp.openpkg.org
  ftp> bin
  ftp> cd release/1.1/UPD
  ftp> get apache-1.3.26-1.1.1.src.rpm
  ftp> bye
  $ <prefix>/bin/rpm --checksig apache-1.3.26-1.1.1.src.rpm
  $ <prefix>/bin/rpm --rebuild apache-1.3.26-1.1.1.src.rpm
  $ su -
  # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/apache-1.3.26-1.1.1.*.rpm
  # <prefix>/etc/rc apache stop start
________________________________________________________________________

References:
  [1]  http://httpd.apache.org/
  [2]  http://www.apache.org/dist/httpd/Announcement.html
  [3]  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0839
  [4]  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0840
  [5]  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0843
  [6]  http://www.openpkg.org/tutorial.html#regular-source
  [7]  ftp://ftp.openpkg.org/release/1.1/UPD/apache-1.3.26-1.1.1.src.rpm
  [8]  ftp://ftp.openpkg.org/release/1.1/UPD/
  [9]  ftp://ftp.openpkg.org/release/1.0/UPD/apache-1.3.22-1.0.5.src.rpm
  [10] ftp://ftp.openpkg.org/release/1.0/UPD/
  [11] 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 find under the official URL
http://www.openpkg.org/openpkg.pgp or on http://keyserver.pgp.com/. To
check the integrity of this advisory, verify its digital signature by
using GnuPG (http://www.gnupg.org/). For example, pipe this message to
the command "gpg --verify --keyserver keyserver.pgp.com".
________________________________________________________________________

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