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Category:   Device (Firewall)  >   Cisco ASA Vendors:   Cisco
Cisco ASA Windows NT Domain Authentication Bug Lets Remote Users Bypass IPSec/SSL VPN Authentication
SecurityTracker Alert ID:  1021089
SecurityTracker URL:  http://securitytracker.com/id/1021089
CVE Reference:   CVE-2008-3815   (Links to External Site)
Date:  Oct 22 2008
Impact:   User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.0, 7.1, 7.2, 8.0, 8.1
Description:   A vulnerability was reported in Cisco ASA. A remote user may be able to bypass VPN authentication.

When the target device is configured for IPSec or SSL-based remote access VPNs using Microsoft Windows NT Domain authentication, a remote user may be able to bypass authentication and access the VPN.

Other types of external authentication (i.e., LDAP, RADIUS, TACACS+, SDI, or local database) are not affected.

Cisco has assigned Cisco Bug ID CSCsu65735 to this vulnerability.

Impact:   A remote user can bypass VPN authentication.
Solution:   The vendor has issued fixed versions (7.0(8)3, 7.1(2)78, 7.2(4)16, 8.0(4)6, 8.1(1)13).

The vendor's advisory is available at:

http://www.cisco.com/warp/public/707/cisco-sa-20081022-asa.shtml

Vendor URL:  www.cisco.com/warp/public/707/cisco-sa-20081022-asa.shtml (Links to External Site)
Cause:   Authentication error

Message History:   None.


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