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Pardus: Dhcp: Buffer Overflow Print E-mail
User Rating:      How can I rate this item?
Posted by Benjamin D. Thomas   
malicious people to cause a DoS (Denial of Service) and potentially compromise a user's system.

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------------------------------------------------------------------------
Pardus Linux Security Advisory 2009-107           security@pardus.org.tr
------------------------------------------------------------------------

      Date: 2009-07-24
  Severity: 3
      Type: Local
------------------------------------------------------------------------

Summary
======
A vulnerability has been reported in ISC DHCP, which can be exploited by

malicious people to cause a DoS (Denial  of  Service)  and  potentially
compromise a user's system.


Description
==========
The  vulnerability is  caused  due  to  a  boundary  error  within  the

"script_write_params()"  function in  client/dhclient.c  and  can   be
exploited to cause a stack-based buffer overflow by sending  an  overly
long subnet-mask option.



Successful exploitation may allow  execution  of  arbitrary  code  with

"root" privileges, but requires that  dhclient  processes  a  specially
crafted response from a malicious DHCP server


Affected packages:

  Pardus 2008:
    dhcp, all before 3.1.2_p1-16-3


Resolution
=========
There are update(s) for dhcp. You can update them via Package Manager or
with a single command from console:

    pisi up dhcp

References
=========
  * http://bugs.pardus.org.tr/show_bug.cgi?id476

  * http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692
  * http://secunia.com/advisories/35785
 
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