ABB PCU400 contains a vulnerability which can allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.
The ABB PCU400 application serves as a communication gateway between RTUs that use the IEC-870-5-104 protocol and the SCADA server. The diagnostic web application contains a software flaw which allows an attacker to gain full access on the PCU400 server by sending a specially crafted packet to the X87 web interface on TCP port 8087.
Note that this issue affects PCU400 installations running the IEC60870-5-101/104 protocol based on X87.
A remote attacker may be able to execute arbitrary code with the privileges of the account running the x87 application.
Upgrade or Patch
This issue was reported by Eyal Udassin and Idan Ofrat of C4 Security.
This document was written by Chris Taschner.
|Date First Published:||2008-09-25|
|Date Last Updated:||2009-03-03 19:47 UTC|