CVE-2009-4409

The 1 CHAP and 2 MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator PPPAC function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack...

Authentication flaw

The 1 CHAP and 2 MS-CHAP-V2 authentication capabilities in the PPP Access Concentrator PPPAC function in Internet Initiative Japan SEIL/B1 firmware 1.00 through 2.52 use the same challenge for each authentication attempt, which allows remote attackers to bypass authentication via a replay attack...

Authentication flaw

The Internet Authentication Service IAS in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold does not properly verify the credentials in an MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication request, which allows remote...

CVE-2009-2505

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

Memory corruption

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

CVE-2009-2505

CVE-2009-2505 is a remote code execution flaw in Internet Authentication Service (IAS) on Windows Vista SP2 and Windows Server 2008 SP2, caused by improper validation during MS-CHAP v2 over PEAP. The vulnerability stems from incorrect memory handling when processing PEAP authentication requests, ...

CVE-2009-2505

The Internet Authentication Service IAS in Microsoft Windows Vista SP2 and Server 2008 SP2 does not properly validate MS-CHAP v2 Protected Extensible Authentication Protocol PEAP authentication requests, which allows remote attackers to execute arbitrary code via crafted structures in a malformed...

JVN#49602378 SEIL/B1 authentication issue

The PPP Access Concentrator PPPAC function within SEIL/B1 contains an issue in the CHAP and MS-CHAP-V2 authentication processes, the same challenge value is repeatedly used for each authentication attempt. Impact A third party may be able to perform replay attacks. As a result, the third party ma...