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TITLE:
Ethereal "dissect_a11_radius()" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA14540

VERIFY ADVISORY:
http://secunia.com/advisories/14540/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Ethereal 0.x
http://secunia.com/product/1228/

DESCRIPTION:
Leon Juranic has reported a vulnerability in Ethereal, which
potentially can be exploited by malicious people to compromise a
vulnerable system.

The vulnerability is caused due to boundary errors in the
"dissect_a11_radius()" function in "packet-3g-a11.c" used for RADIUS
authentication dissection. This can be exploited to cause a
stack-based buffer overflow by sending a specially crafted CDMA2000
A11 packet.

Successful exploitation may allow execution of arbitrary code.

The vulnerability has been reported in version 0.10.9 and prior
versions including the 3G-A11 dissector.

SOLUTION:
The vulnerability has been fixed in the CVS repository.

PROVIDED AND/OR DISCOVERED BY:
Leon Juranic

ORIGINAL ADVISORY:
http://security.lss.hr/en/index.php?page=details&ID=LSS-2005-03-04

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