[ GLSA 200704-23 ] capi4k-utils: Buffer overflow

[Raphael Marichez <falco () gentoo org>]

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Gentoo Linux Security Advisory                           GLSA 200704-23
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                                            http://security.gentoo.org/
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  Severity: High
     Title: capi4k-utils: Buffer overflow
      Date: April 27, 2007
      Bugs: #170870
        ID: 200704-23

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Synopsis
========

capi4k-utils is vulnerable to a buffer overflow in the bufprint()
function.

Background
==========

capi4k-utils is a set of utilities for accessing COMMON-ISDN-API
software interfaces for ISDN devices.

Affected packages
=================

    -------------------------------------------------------------------
     Package                  /    Vulnerable    /          Unaffected
    -------------------------------------------------------------------
  1  net-dialup/capi4k-utils      < 20050718-r3         >= 20050718-r3

Description
===========

The bufprint() function in capi4k-utils fails to properly check
boundaries of data coming from CAPI packets.

Impact
======

A local attacker could possibly escalate privileges or cause a Denial
of Service by sending a crafted CAPI packet.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All capi4k-utils users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-dialup/capi4k-utils-20050718-r3"

References
==========

  [ 1 ] CVE-2007-1217
        http://cve.mitre.org/cgi-bin/cvename.cgi?name=2007-1217

Availability
============

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

  http://security.gentoo.org/glsa/glsa-200704-23.xml

Concerns?
=========

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
=======

Copyright 2007 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

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