Debian: 'xvt' buffer overflow
Posted by LinuxSecurity.com Team   
Debian Christophe Bailleux reported on bugtraq that Xvt is vulnerable to a buffer overflow in its argument handling.

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Debian Security Advisory DSA 082-1                     security@debian.org 
http://www.debian.org/security/                             Martin Schulze
October 18th, 2001
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Package        : xvt
Vulnerability  : Buffer Overflow
Problem-Type   : local root exploit
Debian-specific: no

Christophe Bailleux reported on bugtraq that Xvt is vulnerable to a
buffer overflow in its argument handling.  Since Xvt is installed
setuid root, it was possible for a normal user to pass
carefully-crafted arguments to xvt so that xvt executed a root shell.

This problem has been fixed by the maintainer in version 2.1-13 of xvt
for Debian unstable and 2.1-13.0potato.1 for the stable Debian
GNU/Linux 2.2.

We recommend that you upgrade your xvt package 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/dists/stable/updates/main/source/xvt_2.1-13.0potato.1.diff.gz
      MD5 checksum: af96d56c54e9cc37c33ad94fce9a046e
     http://security.debian.org/dists/stable/updates/main/source/xvt_2.1-13.0potato.1.dsc
      MD5 checksum: 7d764dc9635c0c0fe71528dbde31ad7e
     http://security.debian.org/dists/stable/updates/main/source/xvt_2.1.orig.tar.gz
      MD5 checksum: 5727ba381c87361431da3a97ab6034c0

  Alpha architecture:

     http://security.debian.org/dists/stable/updates/main/binary-alpha/xvt_2.1-13.0potato.1_alpha.deb
      MD5 checksum: 2c8b053d550288ccae711af15f7c7fa1

  ARM architecture:

     http://security.debian.org/dists/stable/updates/main/binary-arm/xvt_2.1-13.0potato.1_arm.deb
      MD5 checksum: 2c48de17edf03a25f81bdf4fbf680788

  Intel ia32 architecture:

     http://security.debian.org/dists/stable/updates/main/binary-i386/xvt_2.1-13.0potato.1_i386.deb
      MD5 checksum: 3fe8465dac109969c871f264d847d467

  Motorola 680x0 architecture:

     http://security.debian.org/dists/stable/updates/main/binary-m68k/xvt_2.1-13.0potato.1_m68k.deb
      MD5 checksum: ce3fb43ff3245fff81c074e67766573b

  PowerPC architecture:

     http://security.debian.org/dists/stable/updates/main/binary-powerpc/xvt_2.1-13.0potato.1_powerpc.deb
      MD5 checksum: 51aee01c7f2b4cfa9f4a6b1fec1edfb7

  Sun Sparc architecture:

     http://security.debian.org/dists/stable/updates/main/binary-sparc/xvt_2.1-13.0potato.1_sparc.deb
      MD5 checksum: 04c3f9ebcbe1cbfcbdce9fecef1b4d1e


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

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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/