Vulnerability Note VU#591820
Ethereal fails to properly decode Transaction IDs within TCAP packets
Ethereal contains a vulnerability in the way the Transaction Capabilities Application Part (TCAP) protocol dissector parses ASN.1 encoded Transaction IDs within TCAP packets.
Ethereal is a network traffic analysis package. It includes the ability to decode packets containing TCAP data. The TCAP protocol is designed to enable advanced network telephony services between signaling points. For instance, when dialing an 800, 888, or 900 number, TCAP is used to determine the routing numbers for these digits.
According to an IETF Draft,
The Transaction ID is a reference to correlate messages within the same transaction and associate the TCAP transaction with a specific application at the originating and destination signaling points.
There is a buffer overflow vulnerability in the way the TCAP protocol dissector parses ASN.1 encoded Transaction IDs within TCAP packets. Exploitation of this vulnerability could allow for arbitrary code execution.
A remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.
2) Deselect the TCAP protocol dissector from the list
(for Ethereal versions 0.10.x)
2) Disable the TCAP protocol dissector from the list by unchecking its "Status" checkbox
Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|Ethereal||Affected||-||25 Mar 2004|
CVSS Metrics (Learn More)
Ethereal credits Stefan Esser for reporting this vulnerability.
This document was written by Damon Morda.
- CVE IDs: CAN-2004-0176
- Date Public: 22 Mar 2004
- Date First Published: 25 Mar 2004
- Date Last Updated: 25 Mar 2004
- Severity Metric: 9.82
- Document Revision: 17
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