full-disclosure - [SECURITY] [DSA 1217-1] New linux-ftpd packages fix access control bypass

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Message-ID: <20061120205604.GA4447@galadriel.inutil.org>
Date: Mon, 20 Nov 2006 21:56:04 +0100
From: Moritz Muehlenhoff <jmm@...ian.org>
To: debian-security-announce@...ts.debian.org
Subject: [SECURITY] [DSA 1217-1] New linux-ftpd packages
	fix access control bypass

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- --------------------------------------------------------------------------
Debian Security Advisory DSA 1217-1                    security@...ian.org
http://www.debian.org/security/                         Moritz Muehlenhoff
November 20th, 2006                     http://www.debian.org/security/faq
- --------------------------------------------------------------------------

Package        : linux-ftpd
Vulnerability  : programming error
Problem-Type   : remote
Debian-specific: no
CVE ID         : CVE-2006-5778
Debian Bug     : 384454

Paul Szabo discovered that the netkit ftp server switches the user id too
late, which may lead to the bypass of access restrictions when running
on NFS. This update also adds return value checks to setuid() calls, which
may fail in some PAM configurations.

For the stable distribution (sarge) this problem has been fixed in
version 0.17-20sarge2.

For the upcoming stable distribution (etch) this problem has been
fixed in version 0.17-22.

For the unstable distribution (sid) this problem has been fixed in
version 0.17-22.

We recommend that you upgrade your ftpd 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/l/linux-ftpd/linux-ftpd_0.17-20sarge2.dsc
      Size/MD5 checksum:      610 371222af9e3f445d8b1a0622f3a70382
    http://security.debian.org/pool/updates/main/l/linux-ftpd/linux-ftpd_0.17-20sarge2.diff.gz
      Size/MD5 checksum:    16034 3848d3d15b78aa4dd17b0e09c64b15a8
    http://security.debian.org/pool/updates/main/l/linux-ftpd/linux-ftpd_0.17.orig.tar.gz
      Size/MD5 checksum:    46763 f5f491564812db5d8783daa538c49186

  Alpha architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_alpha.deb
      Size/MD5 checksum:    49118 caeecd835e084796f921fd1941fc8912

  AMD64 architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_amd64.deb
      Size/MD5 checksum:    44858 bb6746d34dac3b9304dae0551c6355f4

  ARM architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_arm.deb
      Size/MD5 checksum:    44090 baa6dc258bbba352aad5d59bbc03f87b

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_hppa.deb
      Size/MD5 checksum:    47430 d856102807f47f8dac3a0b383c1149b4

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_i386.deb
      Size/MD5 checksum:    43310 10ce0c8367e83b1ce1419b244753dcc0

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_ia64.deb
      Size/MD5 checksum:    57366 2121d4017c33f4968230011b27d56bfc

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_m68k.deb
      Size/MD5 checksum:    40914 81af10a14af21fa4a73a97d4b7581cba

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_mips.deb
      Size/MD5 checksum:    46802 ef336e8a944121be9974ae72d6ee5ae8

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_mipsel.deb
      Size/MD5 checksum:    46746 05aa9e2e9c127110d09f345e2a6367d1

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_powerpc.deb
      Size/MD5 checksum:    46712 6932bbad8b6852a3776b40196d28dee1

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_s390.deb
      Size/MD5 checksum:    45992 a0b2bad9c6b04889be2c7b87840769c6

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/l/linux-ftpd/ftpd_0.17-20sarge2_sparc.deb
      Size/MD5 checksum:    43366 a92a7561358f005be3ff58c73a4c4b7b

  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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