Vulnerability Note VU#119876

Ethereal is a network traffic analysis package. It includes the ability to decode packets containing EIGRP data. There are two buffer overflow vulnerabilities in the way the EIGRP protocol dissector decodes packets containing EIGRP data. These vulnerabilities could be exploited by a remote, unauthenticated attacker by sending a specially crafted EIGRP packet containing overly long IP address values. Exploitation of these vulnerabilities could result in arbitrary code execution.

A remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.

Upgrade

Upgrade to version 0.10.3 or later.

Note: Ethereal is considered BETA software at this time.

Disable Dissector

If you are unable to upgrade to version 0.10.3 or later, you can disable the EIGRP protocol dissector by performing the following actions in Ethereal:

(for Ethereal versions 0.8.x and 0.9.x)

1) Select Edit->Protocols
2) Deselect the EIGRP protocol dissector from the list

1) Select Analyze->Enabled Protocols
2) Disable the EIGRP protocol dissector from the list by unchecking its "Status" checkbox