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capi4k-utils: Buffer overflow



capi4k-utils: Buffer overflow
capi4k-utils: Buffer overflow




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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 07-1217 

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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