Tamarack MMSd components fail to properly handle malformed packets
Vulnerability Note VU#372878
Original Release Date: 2006-07-27 | Last Revised: 2008-09-22
Overview
Tamarack MMSd components do not properly handle malformed RFC 1006 packets. This vulnerability may allow a remote, unauthenticated attacker to cause a denial of service condition.
Description
ISO Transport Service over TCP (TPKT, RFC 1006)
RFC 1006 specifies how to run the OSI transport protocol on top of TCP/IP. In the layered protocol model, RFC 1006 is situated between the TCP and OSI transport layers.
Tamarack MMSd
Tamarack MMSd is an implementation of the Manufacturing Message Specification (MMS, ISO 9506) protocol for small field devices.
The Problem
Tamarack MMSd components fail to properly handle malformed packets at the RFC 1006 layer. A remote, unauthenticated attacker may be able to exploit this vulnerability by sending a specially crafted packet to a server running a vulnerable version of Tamarack MMSd.
Impact
A remote, unauthenticated attacker may be able to cause a denial of service condition on the device running Tamarack MMSd.
Solution
Upgrade This problem has been addressed in Tamarack MMSd version 7.992.
Notified: March 28, 2006 Updated: September 22, 2008
Status
Affected
Vendor Statement
Tamarack fixed the vulnerability as soon as we were made aware of it, and released the fix in V7.992. So far, we are not aware of anyone having experienced any difficulty regarding this vulnerability. We take all security issues seriously, and will work immediately to resolve them. It is recommended that IEC61850 products (and all substation networked devices) should be used in secure environments.
Vendor Information
The vendor has not provided us with any further information regarding this vulnerability.