--+g7M9IMkV8truYOl
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory                           GLSA 200707-14
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/ 
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

  Severity: High
     Title: tcpdump: Integer overflow
      Date: July 28, 2007
      Bugs: #184815
        ID: 200707-14

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
=======
A vulnerability has been discovered in tcpdump, allowing for the
execution of arbitrary code, possibly with root privileges.

Background
=========
tcpdump is a tool for capturing and inspecting network traffic.

Affected packages
================
    -------------------------------------------------------------------
     Package               /  Vulnerable  /                 Unaffected
    -------------------------------------------------------------------
  1  net-analyzer/tcpdump     < 3.9.5-r3                   >= 3.9.5-r3

Description
==========
mu-b from Digital Labs discovered that the return value of a snprintf()
call is not properly checked before being used. This could lead to an
integer overflow.

Impact
=====
A remote attacker could send specially crafted BGP packets on a network
being monitored with tcpdump, possibly resulting in the execution of
arbitrary code with the privileges of the user running tcpdump, which
is usually root.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All tcpdump users should upgrade to the latest version:

    # emerge --sync
    # emerge --ask --oneshot --verbose ">=net-analyzer/tcpdump-3.9.5-r3"

References
=========
  [ 1 ] CVE-2007-3798
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-3798 

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

http://security.gentoo.org/glsa/glsa-200707-14.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 

--+g7M9IMkV8truYOl
Content-Type: application/pgp-signature
Content-Disposition: inline

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.7 (GNU/Linux)

iQEVAwUBRqvGYDvRww8BFPxFAQJsQQgAhc431dkFcwctHWxYwi39hKTlQ18y+FuM
cSODr0IEU9kj+dhbdxn8OmeK4aSCao09yEisAeyVlEoHSdhG7JDdM2qd4TTXqKaf
bQctvWFfE013aPOuSyr/kjtnGmUS7WBVH3z7SlHZlm8o1/6owvLOWxyx+NiKC1GE
t2TwW2m2DFhFByEbrIweUAW8o/Sv3QN37QDDi98AaenSBkNtKyNjbJ5zYYtDPohy
lPO8h4lJSrmwmW02GOT/VUBKx62hthhgrhOCejewNJIZdBOz65gzl4lD8EUETS6u
AVcu2TJQDTSTokEuO1WBfRSOtxHXF604pgztja0huh/PY8aNI8/hHg==Enh9
-----END PGP SIGNATURE-----

--+g7M9IMkV8truYOl--