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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:
http://corporate.secunia.com/how_to_buy/15/?r=l

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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
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
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Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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