Debian Security Advisory DSA 121-1 email@example.com http://www.debian.org/security/ Martin Schulze March 11th, 2002
Package : xtell Vulnerability : buffer overflow, symlink problem, ".." directory traversal Problem-Type : remote Debian-specific: no
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
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
http://security.debian.org/dists/stable/updates/main/binary-alpha/xtell_1.91.1_alpha.deb MD5 checksum: 0901b8b491b27be14e7679ac04bc2d2a
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
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: firstname.lastname@example.org Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>