Cisco Releases Advisory for Cisco PIX and ASA：US-CERT Current Activity（情報元のブックマーク数）
CiscoがPIXとASAに対してDoSを受ける脆弱性が存在するということでセキュリティアドバイザリーを出しているそうです。
Cisco Security Advisory cisco-sa-20081022-asa was released to address multiple vulnerabilities in Cisco ASA and PIX. These vulnerabilities may allow an attacker to bypass authentication mechanisms or cause a denial-of-service condition.
http://www.us-cert.gov/current/index.html#cisco_releases_advisory_for_cisco1
NTドメイン認証周りみたいです。
http://www.cisco.com/warp/public/707/cisco-sa-20081022-asa.shtmlWindows NT Domain Authentication Bypass Vulnerability
Because of a Microsoft Windows NT Domain authentication issue the Cisco ASA and Cisco PIX devices may be susceptible to a VPN authentication bypass vulnerability. Cisco ASA or Cisco PIX security appliances that are configured for IPSec or SSL-based remote access VPN using Microsoft Windows NT Domain authentication may be vulnerable. Devices that are using any other type of external authentication (that is, LDAP, RADIUS, TACACS+, SDI, or local database) are not affected by this vulnerability.
