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===========================================================================
             AUSCERT External Security Bulletin Redistribution

            ESB-2002.638 -- Debian Security Advisory DSA 195-1
           New Apache-Perl packages fix several vulnerabilities
                             15 November 2002

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:                apache-perl
Vendor:                 Debian
Operating System:       Debian GNU/Linux 3.0
                        Debian GNU/Linux 2.2
Impact:                 Overwrite Arbitrary Files
                        Denial of Service
                        Execute Arbitrary Code/Commands
Access Required:        Remote

Ref:                    ESB-2002.605

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Debian Security Advisory DSA 195-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
November 13th, 2002                     http://www.debian.org/security/faq
- - --------------------------------------------------------------------------

Package        : apache-perl
Vulnerability  : several
Problem-Type   : remote, local
Debian-specific: no
CVE Id         : CAN-2002-0839 CAN-2002-0840 CAN-2002-0843 CAN-2001-0131 CAN-2002-1233
BugTraq ID     : 5847 5884 5887

According to David Wagner, iDEFENSE and the Apache HTTP Server
Project, several vulnerabilities have been found in the Apache server
package, a commonly used webserver.  Most of the code is shared
between the Apache and Apache-Perl packages, so vulnerabilities are
shared as well.

These vulnerabilities could allow an attacker to enact a denial of
service against a server or execute a cross site scripting attack, or
steal cookies from other web site users.  The Common Vulnerabilities
and Exposures (CVE) project identified the following vulnerabilities:

1. CAN-2002-0839: A vulnerability exists on platforms using System V
   shared memory based scoreboards.  This vulnerability allows an
   attacker to execute code 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: 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: There were some possible overflows in the utility
   ApacheBench (ab) which could be exploited by a malicious server.
   No such binary programs are distributed by the Apache-Perl package,
   though.

4. CAN-2002-1233: A race condition in the htpasswd and htdigest
   program enables a malicious local user to read or even modify the
   contents of a password file or easily create and overwrite files as
   the user running the htpasswd (or htdigest respectively) program.
   No such binary programs are distributed by the Apache-Perl package,
   though.

5. CAN-2001-0131: htpasswd and htdigest in Apache 2.0a9, 1.3.14, and
   others allows local users to overwrite arbitrary files via a
   symlink attack.  No such binary programs are distributed by the
   Apache-Perl package, though.

6. NO-CAN: Several buffer overflows have been found in the ApacheBench
   (ab) utility that could be exploited by a remote server returning
   very long strings.  No such binary programs are distributed by the
   Apache-Perl package, though.

These problems have been fixed in version 1.3.26-1-1.26-0woody2 for
the current stable distribution (woody), in
1.3.9-14.1-1.21.20000309-1.1 for the old stable distribution (potato)
and in version 1.3.26-1.1-1.27-3-1 for the unstable distribution
(sid).

We recommend that you upgrade your Apache-Perl package immediately.

wget url
        will fetch the file for you
dpkg -i file.deb
        will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
        will update the internal database
apt-get upgrade
        will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian GNU/Linux 2.2 alias potato
- - ---------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1.dsc
      Size/MD5 checksum:      612 8fa1cd6e001b2621a749f4b5c649e970
    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1.tar.gz
      Size/MD5 checksum:  2403933 6d1ced52706288e401f84064cbff823d

  Alpha architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_alpha.deb
      Size/MD5 checksum:  1126584 949eb23cd106f0d1be213a2d1f222e35

  ARM architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_arm.deb
      Size/MD5 checksum:  1000058 6403c48425e4b62e3e5d232eb0eca5d8

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_i386.deb
      Size/MD5 checksum:   956320 da48dac81fbc5f66e7f9f350c2eb90bb

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_m68k.deb
      Size/MD5 checksum:   923340 bdc936f40eb10f523a7f865f3a7bf19e

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_powerpc.deb
      Size/MD5 checksum:  1005128 a237e415455689fb02143ff8c8b94b50

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.9-14.1-1.21.20000309-1.1_sparc.deb
      Size/MD5 checksum:  1001880 033f4c4ec40b4aa2600484e93082b798


Debian GNU/Linux 3.0 alias woody
- - --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2.dsc
      Size/MD5 checksum:      706 de8082abd65d3b5996c16b17b8a925a5
    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2.tar.gz
      Size/MD5 checksum:  3290245 13ef2acabfbae0ad98b6e70b2dc724fe

  Alpha architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_alpha.deb
      Size/MD5 checksum:   247946 387b3e7006576a5bcaad96ab02dd5108

  ARM architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_arm.deb
      Size/MD5 checksum:   207682 097b58c87cef40cf815937c07e31e8ca

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_i386.deb
      Size/MD5 checksum:   193440 b131f4f5e43cffc2a15f6b2f83f016c6

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_ia64.deb
      Size/MD5 checksum:   320266 8fe41e1bcc6b16ada481082508af249d

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_hppa.deb
      Size/MD5 checksum:   241968 0223028e1a9483980427779b4b4c5ff8

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_m68k.deb
      Size/MD5 checksum:   182532 d9086e11cbf640adb05981afed42f9b2

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_mips.deb
      Size/MD5 checksum:   219074 1d0801e02d82f0e1638f4837b3ba89da

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_mipsel.deb
      Size/MD5 checksum:   218656 aca5ed9a669785205ded19e00a702a9d

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_powerpc.deb
      Size/MD5 checksum:   208896 30a6a3398df64c1bf9967ecc329dae95

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_s390.deb
      Size/MD5 checksum:   203072 9997d9ae90f1c8a49b31ce1f43ef25ef

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/a/apache-perl/apache-perl_1.3.26-1-1.26-0woody2_sparc.deb
      Size/MD5 checksum:   206058 a4c9c3cc6e1b7fc63cf23972902bee84


  These files will probably be moved into the stable distribution on
  its next revision.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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