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KAME Racoon IKE daemon fails to properly verify client RSA signatures

Vulnerability Note VU#552398

Original Release Date: 2004-04-09 | Last Revised: 2004-04-09

Overview

The KAME Racoon IKE daemon fails to properly verify client RSA signatures when using Main or Aggressive Mode during a Phase 1 IKE exchange.

Description

Racoon is an IKE Key Management daemon that negotiates and configures a set of parameters for IPSec. When authenticating a peer in Phase 1 of an IKE exchange, Racoon can use pre-shared keys, RSA signatures, or GSS-API. When using RSA signatures for authentication, Racoon validates the X.509 certificate, but fails to verify the client RSA signature.

Impact

An attacker with access to a trusted X.509 certificate can conduct a man-in-the-middle attack or establish an authenticated IPSec connection using any private key to generate the RSA signature.

Solution

Apply Patch

Apply a patch as specified by your vendor. If a patch is unavailable, KAME has released a patch that is available in their CVS repository at:

http://www.kame.net/dev/cvsweb2.cgi/kame/kame/kame/racoon/crypto_openssl.c.diff?r1=1.83&r2=1.84

Vendor Information

552398
 
Affected   Unknown   Unaffected

KAME Project

Updated:  April 09, 2004

Status

  Vulnerable

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Please refer to the KAME CVS entry for "crypto_openssl.c".

If you have feedback, comments, or additional information about this vulnerability, please send us email.


CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A

References

Acknowledgements

This vulnerability was reported by Ralf Spenneberg.

This document was written by Damon Morda.

Other Information

CVE IDs: CVE-2004-0155
Severity Metric: 8.58
Date Public: 2004-04-07
Date First Published: 2004-04-09
Date Last Updated: 2004-04-09 20:43 UTC
Document Revision: 25

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