Cisco ASA 5500 and PIX 500 NTLMv1 security bypass
|cisco-asa-ntlmv1-security-bypass (56342)||Medium Risk|
Cisco ASA 5500 and PIX 500 could allow a remote attacker to bypass security restrictions, caused by an error when the appliance is configured to authenticate users against Microsoft Windows servers using the NTLMv1 protocol. By sending a specially-crafted invalid username, a remote attacker could exploit this vulnerability to bypass authentication for any services using an AAA server group configured to use NTLMv1.
Refer to cisco-sa-20100217-asa for patch, upgrade or suggested workaround information. See References.
- cisco-sa-20100217-asa: Multiple Vulnerabilities in Cisco ASA 5500 Series Adaptive Security Appliances.
- BID-38276: Cisco ASA 5500 NTLM Protocol Authentication Bypass Vulnerability
- BID-38279: Cisco ASA 5500 IKE Message Denial of Service Vulnerability
- CVE-2010-0568: Unspecified vulnerability in Cisco ASA 5500 Series Adaptive Security Appliance 7.0 before 7.0(8.10), 7.2 before 7.2(4.45), 8.0 before 8.0(5.7), 8.1 before 8.1(2.40), and 8.2 before 8.2(2.1); and Cisco PIX 500 Series Security Appliance; allows remote attackers to bypass NTLMv1 authentication via a crafted username, aka Bug ID CSCte21953.
- OSVDB ID: 62437: Cisco Multiple Products Crafted Username NTLMv1 Authentication Bypass
- SA38618: Cisco ASA 5500 Series Multiple Vulnerabilities
- SA38636: Cisco PIX 500 Series Multiple Vulnerabilities
- SECTRACK ID: 1023612: Cisco ASA TCP, SIP, SCCP, DTLS, and IKE Processing Flaws Let Remote Users Deny Service
- Cisco ASA 5500 7.0
- Cisco ASA 5500 7.2
- Cisco ASA 5500 8.0
- Cisco ASA 5500 8.1
- Cisco ASA 5500 8.2
- Cisco PIX 500
Feb 17, 2010
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.