Cisco VPN 3000 Concentrator before 4.1.7.F allows remote attackers to determine valid groupnames by sending an IKE Aggressive Mode packet with the groupname in the ID field, which generates a response if the groupname is valid, but does not generate a response for an invalid groupname.
Link | Tags |
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http://www.nta-monitor.com/news/vpn-flaws/cisco/VPN-Concentrator/index.htm | exploit patch vendor advisory |
http://www.securityfocus.com/bid/13992 | vdb entry patch vendor advisory |
http://www.vupen.com/english/advisories/2005/0822 | vdb entry |