Citadel/UX Weak Internal Program Authentication Key Vulnerability

BID:8193

Info

Citadel/UX Weak Internal Program Authentication Key Vulnerability

Bugtraq ID: 8193
Class: Design Error
CVE:
Remote: Yes
Local: No
Published: Jul 15 2003 12:00AM
Updated: Jul 15 2003 12:00AM
Credit: Discovery of this vulnerability has been credited to Carl Livitt <[email protected]> and br00t <[email protected]>.
Vulnerable: Citadel/UX Citadel/UX 6.0 7
Citadel/UX Citadel/UX 5.90
Not Vulnerable: Citadel/UX Citadel/UX 6.0 8

Discussion

Citadel/UX Weak Internal Program Authentication Key Vulnerability

Citadel/UX uses an authentication key exchange process, normally used to authenticate to the Citadel/UX as an internal trusted program (IPGM).

A vulnerability has been reported for Citadel/UX, the issue presents itself in the procedure used by Citadel/UX to generate the internal program authentication key. The affected server derives a low entropy key that can be easily replicated.

If successful a remote attacker may authenticate with the affected server as a trusted program, and consequently attain elevated privileges.

Exploit / POC

Citadel/UX Weak Internal Program Authentication Key Vulnerability

The following proof of concept exploit, brute forces the IPGM authentication key and subsequently exploits the issue described in BID 8191:

Solution / Fix

Citadel/UX Weak Internal Program Authentication Key Vulnerability

Solution:
The vendor has released an upgrade to address this issue:


Citadel/UX Citadel/UX 5.90

Citadel/UX Citadel/UX 6.0 7

References

Citadel/UX Weak Internal Program Authentication Key Vulnerability

References:

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