Vulnerability Note VU#644886
Ethereal fails to properly parse NetFlow UDP packets with an overly large template_entry count
Ethereal fails to properly parse v9_template structures in NetFlow UDP packets with an overly large template_entry count. This could allow an attacker to execute arbitrary code.
Ethereal is a network traffic analysis package. It includes the ability to decode packets containing NetFlow data. There is a buffer overflow vulnerability in the way the NetFlow v9 dissector parses v9_template structures in a NetFlow UDP packet. A remote, unauthenticated attacker could exploit this vulnerability by sending a NetFlow UDP packet containing an overly large template_entry count which could allow for arbitrary code execution.
A remote, unauthenticated attacker could execute arbitrary code on the vulnerable system.
Upgrade to version 0.10.3 or later.
2) Deselect the NetFlow protocol dissector from the list
(for Ethereal versions 0.10.x)
2) Disable the CFLOW (Cisco NetFlow) protocol dissector from the list by unchecking its "Status" checkbox
However, it is strongly encouraged to upgrade to version 0.10.3 or later.
Systems Affected (Learn More)
|Vendor||Status||Date Notified||Date Updated|
|Ethereal||Affected||-||24 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: 24 Mar 2004
- Date Last Updated: 25 Mar 2004
- Severity Metric: 9.82
- Document Revision: 25