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Debian: fetchmail, fetchmail-ssl buffer overflows Print E-mail
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Posted by LinuxSecurity.com Team   
Debian There are several buffer overflows and a broken boundary check within fetchmail. If fetchmail is running in multidrop mode these flaws can be used by remote attackers to crash it or to execute arbitrary code under the user id of the user running fetchmail. Depending on the configuration this even allows a remote rootcompromise.

- --------------------------------------------------------------------------
Debian Security Advisory DSA 171-1                     security@debian.org 
http://www.debian.org/security/                             Martin Schulze
October 7th, 2002                        http://www.debian.org/security/faq
- --------------------------------------------------------------------------

[ Resent since this advisory did not appear in the list archive. ]

Package        : fetchmail, fetchmail-ssl
Vulnerability  : buffer overflows
Problem-Type   : remote
Debian-specific: no

Stefan Esser discovered several buffer overflows and a broken boundary
check within fetchmail.  If fetchmail is running in multidrop mode
these flaws can be used by remote attackers to crash it or to execute
arbitrary code under the user id of the user running fetchmail.
Depending on the configuration this even allows a remote root
compromise.

These problems have been fixed in version 5.9.11-6.1 for both
fetchmail and fetchmail-ssl for the current stable distribution
(woody), in version 5.3.3-4.2 for fetchmail for the old stable
distribution (potato) and in version 6.1.0-1 for both fetchmail and
fetchmail-ssl for the unstable distribution (sid).  There are no
fetchmail-ssl packages for the old stable distribution (potato) and
thus no updates.

We recommend that you upgrade your fetchmail packages 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/f/fetchmail/fetchmail_5.3.3-4.2.dsc
      Size/MD5 checksum:      566 86a1178baa3487e805a33355ad3ae9ca
     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2.diff.gz
      Size/MD5 checksum:    27775 0333f3e025e4b37abee2a64491f38eea
     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3.orig.tar.gz
      Size/MD5 checksum:   755731 d2cffc4594ec2d36db6681b800f25e2a

  Architecture independent components:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_5.3.3-4.2_all.deb
      Size/MD5 checksum:    63276 0b4940f3a569415e7c28dd96c38320cb

  Alpha architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_alpha.deb
      Size/MD5 checksum:   371634 1baca38aca2bf43437d56e10ed88a862

  ARM architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_arm.deb
      Size/MD5 checksum:   349456 44de8a9abf92435bbf5b964f3acc0fa6

  Intel IA-32 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_i386.deb
      Size/MD5 checksum:   319508 a6574ad75f79694b96f51b9773be623b

  Motorola 680x0 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_m68k.deb
      Size/MD5 checksum:   315662 cfce75c2bf709837dfbc3dc6708abd81

  PowerPC architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_powerpc.deb
      Size/MD5 checksum:   350250 8129d3f2ce8d0c0bd2403266b48a6bde

  Sun Sparc architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.3.3-4.2_sparc.deb
      Size/MD5 checksum:   350714 2c12d41c04324b5df87238d46f80cb76


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

  Source archives:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1.dsc
      Size/MD5 checksum:      712 f10e451766beab56196f34798c7ba9db
     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1.diff.gz
      Size/MD5 checksum:   300108 b9fa639e6a9582ac96d7ec4a495b0a3c
     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11.orig.tar.gz
      Size/MD5 checksum:   950273 fff00cbf7be1d01a17605fee23ac96dd
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1.dsc
      Size/MD5 checksum:      707 43775de628a7fc825041f699c59a9578
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1.diff.gz
      Size/MD5 checksum:   296194 e1e0e64a296b6f0454298fc1dedf808d
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11.orig.tar.gz
      Size/MD5 checksum:   950273 fff00cbf7be1d01a17605fee23ac96dd

  Architecture independent components:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail-common_5.9.11-6.1_all.deb
      Size/MD5 checksum:   165264 7256588af225867b680d786915073439
     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmailconf_5.9.11-6.1_all.deb
      Size/MD5 checksum:    92606 573f619586119ee527148b3088217218

  Alpha architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_alpha.deb
      Size/MD5 checksum:   307112 1918fce521b142b4a11d10fef21cb38a
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_alpha.deb
      Size/MD5 checksum:   310008 8a18b847ae9bdd226f3748fa548ace0f

  ARM architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_arm.deb
      Size/MD5 checksum:   290742 4955b54e130b9e45eef293325a82cd0a
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_arm.deb
      Size/MD5 checksum:   296680 490047165eb9bbca27f9b453e0fd9d27

  Intel IA-32 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_i386.deb
      Size/MD5 checksum:   286470 0fca1845b94f27245162f0de4b5777d7
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_i386.deb
      Size/MD5 checksum:   291966 1b8ed084094d2cf1f6682db62ee54d67

  Intel IA-64 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_ia64.deb
      Size/MD5 checksum:   329914 23051aaf0046637631d2e4c96b70c66a
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_ia64.deb
      Size/MD5 checksum:   333966 4d0c09698b8b12cb119261a4a35571cc

  HP Precision architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_hppa.deb
      Size/MD5 checksum:   299088 9deaf7d0d1018e8209e3862d78a3c44b
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_hppa.deb
      Size/MD5 checksum:   301960 aaccf885a569e81345572e795d46d573

  Motorola 680x0 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_m68k.deb
      Size/MD5 checksum:   281246 a77ac90a3a7916288269518b3042e8e5
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_m68k.deb
      Size/MD5 checksum:   286362 0293d1d12c7b54a7969cddbeca0853a5

  Big endian MIPS architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_mips.deb
      Size/MD5 checksum:   296514 5d2c39988e39dc693ba7f383bd49ecf2
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_mips.deb
      Size/MD5 checksum:   301052 0c3d1dd12f378814019d92429f258181

  Little endian MIPS architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_mipsel.deb
      Size/MD5 checksum:   296000 73386d2c899c9a82ea377b9665f07030
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_mipsel.deb
      Size/MD5 checksum:   300584 5be1cc938485af3dc9637dfd32befcf5

  PowerPC architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_powerpc.deb
      Size/MD5 checksum:   291650 61fb21611565abd5d22ab24985b011c7
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_powerpc.deb
      Size/MD5 checksum:   297674 8c1ab3280ab7e54f1782be1529d39168

  IBM S/390 architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_s390.deb
      Size/MD5 checksum:   288912 87746376aba7f9c10c3c03e2f0d98852
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_s390.deb
      Size/MD5 checksum:   294550 e147d29c60457d637bfccb632e7ac688

  Sun Sparc architecture:

     http://security.debian.org/pool/updates/main/f/fetchmail/fetchmail_5.9.11-6.1_sparc.deb
      Size/MD5 checksum:   293394 0df6d54de254121e19dcaf28dc5bd983
     http://security.debian.org/pool/updates/main/f/fetchmail-ssl/fetchmail-ssl_5.9.11-6.1_sparc.deb
      Size/MD5 checksum:   298082 9e6c4afb65dad122947af7c8c92d1e77


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

- ---------------------------------------------------------------------------------
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 ' and  http://packages.debian.org/



 
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