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Home » Hacking News » DSA 121-1-xtell

DSA 121-1-xtell

by Nikola Strahija on March 12th, 2002 Several security related problems have been found in the xtell package, a simple messaging client and server. In detail, these problems contain several buffer overflows, a problem in connection with symbolic links, unauthorized directory traversal when the path contains "..". These problems could lead into an attacker being able to execute arbitrary code on the server machine. The server runs with nobody privileges by default, so this would be the account to be exploited.


They have been corrected by backporting changes from a newer upstream
version by the Debian maintainer for xtell. These problems are fixed
in version 1.91.1 in the stable distribution of Debian and in version
2.7 for the testing and unstable distribution of Debian.

We recommend that you upgrade your xtell 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/dists/stable/updates/main/source/xtell_1.91.1.dsc
MD5 checksum: a7dbe82b7a451bc5153f8c42efe5bef5

http://security.debian.org/dists/stable/updates/main/source/xtell_1.91.1.tar.gz
MD5 checksum: e6a2b22c793e1dba11b1ea0f10a07029

Alpha architecture:


http://security.debian.org/dists/stable/updates/main/binary-alpha/xtell_1.91.1_alpha.deb
MD5 checksum: 0901b8b491b27be14e7679ac04bc2d2a

ARM architecture:


http://security.debian.org/dists/stable/updates/main/binary-arm/xtell_1.91.1_arm.deb
MD5 checksum: be3416176f8b445d26b99bb42b387606

Intel ia32 architecture:


http://security.debian.org/dists/stable/updates/main/binary-i386/xtell_1.91.1_i386.deb
MD5 checksum: 15dba43eec2b9b24a04523b27e621bbd

Motorola 680x0 architecture:


http://security.debian.org/dists/stable/updates/main/binary-m68k/xtell_1.91.1_m68k.deb
MD5 checksum: ac0c36244ed3d72cae452fc9553036ca

PowerPC architecture:


http://security.debian.org/dists/stable/updates/main/binary-powerpc/xtell_1.91.1_powerpc.deb
MD5 checksum: 4a76e260f54eaae84688e28a18b98add

Sun Sparc architecture:


http://security.debian.org/dists/stable/updates/main/binary-sparc/xtell_1.91.1_sparc.deb
MD5 checksum: d250b1652599b54d2dbb52ce216a3afa


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: [email protected]
Package info: `apt-cache show ' and http://packages.debian.org/

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