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
- VUPEN/ADV-2010-0415: Cisco ASA 5500 Authentication Bypass and Denial of Service Issues
- 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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