Articles / Debian: New netkit-telnet-s…

Debian: New netkit-telnet-ssl packages fix arbitrary code execution

iDEFENSE researchers discovered a buffer overflow in the handling of the LINEMODE suboptions in telnet clients. This can lead to the execution of arbitrary code when connected to a malicious server. Fixed packages are available from security.debian.org .
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Debian Security Advisory DSA 699-1                     security@debian.org
http://www.debian.org/security/                             Martin Schulze
March 29th, 2005                        http://www.debian.org/security/faq
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Package        : netkit-telnet-ssl
Vulnerability  : buffer overflow
Problem-Type   : remote
Debian-specific: no
CVE ID         : CAN-2005-0469

iDEFENSE researchers discovered a buffer overflow in the handling of
the LINEMODE suboptions in telnet clients.  This can lead to the
execution of arbitrary code when connected to a malicious server.

For the stable distribution (woody) this problem has been fixed in
version 0.17.17+0.1-2woody4.

For the unstable distribution (sid) this problem will be fixed soon.

We recommend that you upgrade your telnet-ssl 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 3.0 alias woody
- --------------------------------

  Source archives:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody4.dsc
      Size/MD5 checksum:      669 edcae9a56571c23861cc772d116f6d9b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1-2woody4.diff.gz
      Size/MD5 checksum:     9099 0c6a68a7522269cb7c7f18e08e9f3228
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/netkit-telnet-ssl_0.17.17+0.1.orig.tar.gz
      Size/MD5 checksum:   167658 faf2d112bc4d44f522bad3bc73da8d6d

  Alpha architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_alpha.deb
      Size/MD5 checksum:   101196 46f45337d4a60eb738b077770e3aa2a4
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_alpha.deb
      Size/MD5 checksum:    57024 b2a33f4b5143da8a36ee78b75850c6c2

  ARM architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody3_arm.deb
      Size/MD5 checksum:    85194 1db7e7432d8025531b869ae5c737014b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody3_arm.deb
      Size/MD5 checksum:    48596 ad29db7a35ad3ee4e3d2c5c411b0edb9

  Intel IA-32 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_i386.deb
      Size/MD5 checksum:    85608 6b9e94d7acf3274a62a78e98b069060b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_i386.deb
      Size/MD5 checksum:    46730 09bf8699c1af6a5f4f9e913d7ef92759

  Intel IA-64 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_ia64.deb
      Size/MD5 checksum:   123272 d81d94ec52c655bb8496bf126c9077aa
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_ia64.deb
      Size/MD5 checksum:    66728 e1879d40f611846bb7f787245feb8fee

  HP Precision architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_hppa.deb
      Size/MD5 checksum:    86624 677730710e0adac9cb6cbe1d1cca742b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_hppa.deb
      Size/MD5 checksum:    54054 df3349ebb866ada9bc08a3dabf681bcc

  Motorola 680x0 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_m68k.deb
      Size/MD5 checksum:    81534 9007bc1b9ce71d54eda4da588269e39b
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_m68k.deb
      Size/MD5 checksum:    45494 8bd015cf665ed260e8943aaf9a88d5a9

  Big endian MIPS architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_mips.deb
      Size/MD5 checksum:    97454 ad228bd9d0353478740fde78095b8332
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_mips.deb
      Size/MD5 checksum:    52346 b22cdea93cc2d406144f7797918ba348

  Little endian MIPS architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_mipsel.deb
      Size/MD5 checksum:    97292 fe280b5296350918ef3f99bd86c1e3e8
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_mipsel.deb
      Size/MD5 checksum:    52334 816d5bce2968f676d3261a1d3e9e5e21

  PowerPC architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_powerpc.deb
      Size/MD5 checksum:    88238 c0b09580e81ff24c5e04d7ae0e859645
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_powerpc.deb
      Size/MD5 checksum:    48882 f1ab39899f6b2892cae81b8b4dfb2d16

  IBM S/390 architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_s390.deb
      Size/MD5 checksum:    88746 b4a754f74fe3bc462488c62a137fa422
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_s390.deb
      Size/MD5 checksum:    50562 fe91806b369af4ff31030c1079b7b9bd

  Sun Sparc architecture:

    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnet-ssl_0.17.17+0.1-2woody4_sparc.deb
      Size/MD5 checksum:    89356 dd5d9462b3b86d40f0f67a9ec86adc57
    http://security.debian.org/pool/updates/main/n/netkit-telnet-ssl/telnetd-ssl_0.17.17+0.1-2woody4_sparc.deb
      Size/MD5 checksum:    54646 5d694a26621ef73ce5d2c0e6ed9bc887


  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@lists.debian.org
Package info: `apt-cache show ' and http://packages.debian.org/

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