bugtraq - [SECURITY] [DSA 785-1] New libpam-ldap packages fix authentication bypass

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Message-ID: <m1E8L0D-000ofaC__30513.3439637304$1124995621$gmane$org@finlandia.Infodrom.North.DE>
Date: Thu, 25 Aug 2005 18:54:57 +0200 (CEST)
From: joey@...odrom.org (Martin Schulze)
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 785-1] New libpam-ldap packages fix authentication bypass


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- --------------------------------------------------------------------------
Debian Security Advisory DSA 785-1                     security@...ian.org
http://www.debian.org/security/                             Martin Schulze
August 25th, 2005                       http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : libpam-ldap
Vulnerability  : authentication bypass
Problem-Type   : remote
Debian-specific: no
CVE ID         : CAN-2005-2641
CERT advisory  : VU#778916

It has been discovered that libpam-ldap, the Pluggable Authentication
Module allowing LDAP interfaces, ignores the result of an attempt to
authenticate against an LDAP server that does not set an optional data
field.

The old stable distribution (woody) is not affected by this problem.

For the stable distribution (sarge) this problem has been fixed in
version 178-1sarge1.

For the unstable distribution (sid) this problem has been fixed in
version 178-1sarge1.

We recommend that you upgrade your libpam-ldap package.


Upgrade Instructions
- --------------------

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 3.1 alias sarge
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1.dsc
      Size/MD5 checksum:      672 d669aa6f0c46e637446594350af42cc8
    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1.diff.gz
      Size/MD5 checksum:    19528 2924e1797c39f05e37bafaa761ca2c96
    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178.orig.tar.gz
      Size/MD5 checksum:   127074 222186c498d24a7035e8a7494fc0797d

  Alpha architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_alpha.deb
      Size/MD5 checksum:    59270 a6960b38195110ce4c555cf89e2cc752

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_amd64.deb
      Size/MD5 checksum:    56984 e14265169b634d5c6ee243cc1b8cc410

  ARM architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_arm.deb
      Size/MD5 checksum:    55852 6a4f6cee9779f0bd45511fe4dda02245

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_i386.deb
      Size/MD5 checksum:    57406 eafc9a4a7ee19e173cca4069ce822938

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_ia64.deb
      Size/MD5 checksum:    65072 4de0ae7288d74d2eb7708424603b50f6

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_hppa.deb
      Size/MD5 checksum:    60552 3eb44b515aa7fdd05376520de7ab99dd

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_m68k.deb
      Size/MD5 checksum:    55992 41341e49ab1dd2b2f7c6e1365186579f

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_mips.deb
      Size/MD5 checksum:    56360 3d4ad06491d46a8cbcc80236dd3edd08

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_mipsel.deb
      Size/MD5 checksum:    56292 258c5c9a7b9b725c305c122a6843a4d9

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_powerpc.deb
      Size/MD5 checksum:    57216 933ce656b572a6faaf1273eb2a5bba41

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_s390.deb
      Size/MD5 checksum:    57370 217d4f36380fcecec41236ed53f9a2d6

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/libp/libpam-ldap/libpam-ldap_178-1sarge1_sparc.deb
      Size/MD5 checksum:    56934 411656469f51633a23ae7e9961786fca


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

- ---------------------------------------------------------------------------------
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@...ts.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>

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