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To improve our services to our customers, we have made a number of
additions to the Secunia Advisories and have started translating the
advisories to German.

The improvements will help our customers to get a better
understanding of how we reached our conclusions, how it was rated,
our thoughts on exploitation, attack vectors, and scenarios.

This includes:
* Reason for rating
* Extended description
* Extended solution
* Exploit code or links to exploit code
* Deep links

Read the full description:
http://corporate.secunia.com/products/48/?r=l

Contact Secunia Sales for more information:
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TITLE:
Xsupplicant  "eap_do_notify()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA22612

VERIFY ADVISORY:
http://secunia.com/advisories/22612/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From local network

SOFTWARE:
Xsupplicant 1.x
http://secunia.com/product/12446/

DESCRIPTION:
A vulnerability has been reported in Xsupplicant, which potentially
can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error within the
"eap_do_notify()" function. This can be exploited to cause a
stack-based buffer overflow by sending a specially crafted EAP
packet. 

Successful exploitation may allow the execution of arbitrary code
with "root" privileges.

SOLUTION:
Update to version 1.2.8.

PROVIDED AND/OR DISCOVERED BY:
Yannick Van Osselaer

ORIGINAL ADVISORY:
http://open1x.sourceforge.net/
http://www.mandriva.com/security/advisories?name=MDKSA-2006:189

OTHER REFERENCES:
http://open1x.cvs.sourceforge.net/open1x/xsupplicant/src/eap.c?r1=1.135&r2=1.136

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About:
This Advisory was delivered by Secunia as a free service to help
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