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Category:   Application (Security)  >   Racoon Vendors:   KAME Project
(Mandrake Issues Fix) KAME Racoon RSA Signature IKE Phase 1 Authentication Flaw Authenticates Remote Users
SecurityTracker Alert ID:  1009714
SecurityTracker URL:  http://securitytracker.com/id/1009714
CVE Reference:   CVE-2004-0155   (Links to External Site)
Date:  Apr 9 2004
Impact:   Host/resource access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): crypto_openssl.c file version 1.83 and prior versions
Description:   An authentication vulnerability was reported in KAME Racoon. A remote user with a valid certificate but invalid key can be authenticated in certain cases.

Ralf Spenneberg reported that a remote user with a valid RSA signature (but without the proper private key) can connect using IKE Phase 1 main mode or aggresive mode and be succesfully authenticated.

The flaw resides in 'crypto_openssl.c' in the eay_check_x509sign() function.

Impact:   A remote user can be authenticated without having the proper private RSA key.
Solution:   Mandrake has released a fix.

Mandrakelinux 10.0:
5ccd56bb9dab0708be04d99e68ee636a 10.0/RPMS/ipsec-tools-0.2.5-0.1.100mdk.i586.rpm
60af7d28c135a27a4a7a6a7a340154db 10.0/RPMS/libipsec-tools0-0.2.5-0.1.100mdk.i586.rpm
a19e2af746e74f53b9a2d8e8e949a58a 10.0/SRPMS/ipsec-tools-0.2.5-0.1.100mdk.src.rpm

Vendor URL:  www.kame.net/racoon/ (Links to External Site)
Cause:   Authentication error
Underlying OS:  Linux (Mandriva/Mandrake)
Underlying OS Comments:  10.0

Message History:   This archive entry is a follow-up to the message listed below.
Apr 7 2004 KAME Racoon RSA Signature IKE Phase 1 Authentication Flaw Authenticates Remote Users



 Source Message Contents

Subject:  MDKSA-2004:027 - Updated ipsec-tools packages fix vulnerability in racoon


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

 _______________________________________________________________________

                 Mandrakelinux Security Update Advisory
 _______________________________________________________________________

 Package name:           ipsec-tools
 Advisory ID:            MDKSA-2004:027
 Date:                   April 8th, 2004

 Affected versions:	 10.0
 ______________________________________________________________________

 Problem Description:

 A very serious security flaw was discovered by Ralf Spenneberg in 
 racoon, the IKE daemon of the KAME-tools.  Racoon does not very the RSA
 signature during phase one of a connection using either main or
 aggressive mode.  Only the certificate of the client is verified, the
 certificate is not used to verify the client's signature.
 
 All versions of ipsec-tools prior to 0.2.5 and 0.3rc5 are vulnerable
 to this issue.  The provided package updates ipsec-tools to 0.2.5.
 _______________________________________________________________________

 References:

  http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0155
 ______________________________________________________________________

 Updated Packages:
  
 Mandrakelinux 10.0:
 5ccd56bb9dab0708be04d99e68ee636a  10.0/RPMS/ipsec-tools-0.2.5-0.1.100mdk.i586.rpm
 60af7d28c135a27a4a7a6a7a340154db  10.0/RPMS/libipsec-tools0-0.2.5-0.1.100mdk.i586.rpm
 a19e2af746e74f53b9a2d8e8e949a58a  10.0/SRPMS/ipsec-tools-0.2.5-0.1.100mdk.src.rpm
 _______________________________________________________________________

 To upgrade automatically use MandrakeUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 A list of FTP mirrors can be obtained from:

  http://www.mandrakesecure.net/en/ftp.php

 All packages are signed by Mandrakesoft for security.  You can obtain
 the GPG public key of the Mandrakelinux Security Team by executing:

  gpg --recv-keys --keyserver www.mandrakesecure.net 0x22458A98

 Please be aware that sometimes it takes the mirrors a few hours to
 update.

 You can view other update advisories for Mandrakelinux at:

  http://www.mandrakesecure.net/en/advisories/

 Mandrakesoft has several security-related mailing list services that
 anyone can subscribe to.  Information on these lists can be obtained by
 visiting:

  http://www.mandrakesecure.net/en/mlist.php

 If you want to report vulnerabilities, please contact

  security_linux-mandrake.com

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
  <security linux-mandrake.com>
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-----END PGP SIGNATURE-----

 
 


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