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xterm: User-assisted arbitrary commands execution


1.  Gentoo Linux Security Advisory

Version Information

Advisory Reference GLSA 200902-04 / xterm
Release Date February 12, 2009
Latest Revision February 12, 2009: 01
Impact normal
Exploitable remote
Package Vulnerable versions Unaffected versions Architecture(s)
x11-terms/xterm < 239 >= 239 All supported architectures

Related bugreports: #253155


An error in the processing of special sequences in xterm may lead to arbitrary commands execution.

2.  Impact Information


xterm is a terminal emulator for the X Window system.


Paul Szabo reported an insufficient input sanitization when processing Device Control Request Status String (DECRQSS) sequences.


A remote attacker could entice a user to display a file containing specially crafted DECRQSS sequences, possibly resulting in the remote execution of arbitrary commands with the privileges of the user viewing the file.

3.  Resolution Information


There is no known workaround at this time.


All xterm users should upgrade to the latest version:

Code Listing 3.1: Resolution

# emerge --sync
# emerge --ask --oneshot --verbose ">=x11-terms/xterm-239"

4.  References


Page updated February 12, 2009

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