Message-ID: <87abl0rik0.fsf@mid.deneb.enyo.de>
Date: Sat, 15 Mar 2008 00:29:19 +0100
From: Florian Weimer <fw@...eb.enyo.de>
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 1516-1] New dovecot packages fix privilege escalation

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Debian Security Advisory DSA-1516-1                security@...ian.org
http://www.debian.org/security/                         Florian Weimer
March 14, 2008                      http://www.debian.org/security/faq
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Package        : dovecot
Vulnerability  : privilege escalation
Problem type   : local
Debian-specific: no
CVE Id(s)      : CVE-2008-1199 CVE-2008-1218
Debian Bug     : 469457

Prior to this update, the default configuration for Dovecot used by
Debian runs the server daemons with group mail privileges.  This means
that users with write access to their mail directory by other means
(for example, through an SSH login) could read mailboxes owned by
other users for which they do not have direct write access
(CVE-2008-1199).  In addition, an internal interpretation conflict in
password handling has been addressed proactively, even though it is
not known to be exploitable (CVE-2008-1218).

Note that applying this update requires manual action: The
configuration setting "mail_extra_groups = mail" has been replaced
with "mail_privileged_group = mail".  The update will show a
configuration file conflict in /etc/dovecot/dovecot.conf.  It is
recommended that you keep the currently installed configuration file,
and change the affected line.  For your reference, the sample
configuration (without your local changes) will have been written to
/etc/dovecot/dovecot.conf.dpkg-new.

If your current configuration uses mail_extra_groups with a value
different from "mail", you may have to resort to the
mail_access_groups configuration directive.

For the stable distribution (etch), these problems have been fixed in
version 1.0.rc15-2etch4.

For the unstable distribution (sid), these problems have been fixed in
version 1.0.13-1.

For the old stable distribution (sarge), no updates are provided.
We recommend that you consider upgrading to the stable distribution.

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 4.0 alias etch
- -------------------------------

Source archives:

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch4.dsc
    Size/MD5 checksum:     1300 8146ccf246ed64e1ac8c0127489ec798
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15.orig.tar.gz
    Size/MD5 checksum:  1463069 26f3d2b075856b1b1d180146363819e6
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot_1.0.rc15-2etch4.diff.gz
    Size/MD5 checksum:   102991 21959fc45cf0f8932fa9eb890791ff39

alpha architecture (DEC Alpha)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_alpha.deb
    Size/MD5 checksum:   583482 a0d18885da096140ceb4110d525569d4
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_alpha.deb
    Size/MD5 checksum:  1379844 6103bce830848d3f9bb4347f5c9b94f0
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_alpha.deb
    Size/MD5 checksum:   621320 48127903af1fe2130cb84c57e5a607ff

amd64 architecture (AMD x86_64 (AMD64))

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_amd64.deb
    Size/MD5 checksum:  1222430 1c2e1ffeb6bf745ed88cde01c62d264a
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_amd64.deb
    Size/MD5 checksum:   536634 4f64ed0cc16510e9c3d709342b3c57ca
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_amd64.deb
    Size/MD5 checksum:   569588 c17bac715f188f55ae20e5a3c95109b1

arm architecture (ARM)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_arm.deb
    Size/MD5 checksum:  1123030 47eb9fddcc68c2c213afa10c8e3d8747
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_arm.deb
    Size/MD5 checksum:   506134 0f4d939f2cf68f4e5b01140c846e50bc
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_arm.deb
    Size/MD5 checksum:   537564 82310ae4e42406429f8ade7cbb81abf0

hppa architecture (HP PA RISC)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_hppa.deb
    Size/MD5 checksum:  1298818 603d12284115b6349e1d0334263d2af0
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_hppa.deb
    Size/MD5 checksum:   562192 413ac964849698428c1b08e9cc9075bc
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_hppa.deb
    Size/MD5 checksum:   598934 811c32b5c7e2009e5bf2f0ee0ea26859

i386 architecture (Intel ia32)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_i386.deb
    Size/MD5 checksum:  1133484 3bf26ab783ddffed0b3c5ee53225ba20
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_i386.deb
    Size/MD5 checksum:   546528 d53c11fd1c39870bd208d684e70e7551
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_i386.deb
    Size/MD5 checksum:   514280 e85dcbcdd9b85f6e09cdeb4c82b47916

ia64 architecture (Intel ia64)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_ia64.deb
    Size/MD5 checksum:   793878 106fe266dd26373615772b4e3636a914
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_ia64.deb
    Size/MD5 checksum:   737582 18b15162711b22a704d0ff1ff26e0261
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_ia64.deb
    Size/MD5 checksum:  1701788 7535b0a3407f664efa66bcf86966ff85

mips architecture (MIPS (Big Endian))

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_mips.deb
    Size/MD5 checksum:   559520 96d7ff1bbd3a38fbdd3bd06b4bc939fb
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_mips.deb
    Size/MD5 checksum:   594680 41536feb8048183b78f0d1742278520c
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_mips.deb
    Size/MD5 checksum:  1265800 a42823e1253c78709d5d1c18668d9b40

mipsel architecture (MIPS (Little Endian))

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_mipsel.deb
    Size/MD5 checksum:  1268408 25c8582fea24e3174283066b7c8b6525
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_mipsel.deb
    Size/MD5 checksum:   594912 264c368593a3fe7a9268aadee2ab1292
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_mipsel.deb
    Size/MD5 checksum:   558832 d2a20bbfe49d234d0f3c7911c17c9bfb

powerpc architecture (PowerPC)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_powerpc.deb
    Size/MD5 checksum:   569772 e49cc25c54e4fa88217e0fa555de6039
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_powerpc.deb
    Size/MD5 checksum:   536000 92330b2d1fa2ae8bf6c1b8f05cea3d59
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_powerpc.deb
    Size/MD5 checksum:  1212096 e2339d417408e14eba21b28684926a5b

s390 architecture (IBM S/390)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_s390.deb
    Size/MD5 checksum:   559786 3f7faca1fa56aa29a013068e14e7fada
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_s390.deb
    Size/MD5 checksum:  1290186 5b8722445aab8b59ba15beae695e7f77
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_s390.deb
    Size/MD5 checksum:   595498 ad3af123ee9c10dece62ff7cf0e84b35

sparc architecture (Sun SPARC/UltraSPARC)

  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-imapd_1.0.rc15-2etch4_sparc.deb
    Size/MD5 checksum:   533482 576d0f5a1a733dad01c868095488afcf
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-common_1.0.rc15-2etch4_sparc.deb
    Size/MD5 checksum:  1108250 1ac8086c83312fec554abd74074cf7b2
  http://security.debian.org/pool/updates/main/d/dovecot/dovecot-pop3d_1.0.rc15-2etch4_sparc.deb
    Size/MD5 checksum:   501514 27d4aa890df60532d0a33167df7af219


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

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