Gentoo: xterm User-assisted arbitrary commands execution
Posted by Benjamin D. Thomas   
Gentoo An error in the processing of special sequences in xterm may lead to arbitrary commands execution.
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Gentoo Linux Security Advisory                           GLSA 200902-04
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                                            http://security.gentoo.org/
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  Severity: Normal
     Title: xterm: User-assisted arbitrary commands execution
      Date: February 12, 2009
      Bugs: #253155
        ID: 200902-04

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

Background
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xterm is a terminal emulator for the X Window system.

Affected packages
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    -------------------------------------------------------------------
     Package          /  Vulnerable  /                      Unaffected
    -------------------------------------------------------------------
  1  x11-terms/xterm        < 239                               >=3D 239

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

Impact
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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.

Workaround
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There is no known workaround at this time.

Resolution
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All xterm users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=3Dx11-terms/xterm-239"

References
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  [ 1 ] CVE-2008-2383
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2008-2383

Availability
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This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

  http://security.gentoo.org/glsa/glsa-200902-04.xml

Concerns?
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Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
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Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5