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...

CVE-2009-4409

CVE-2009-4409 affects SEIL/B1 firmware (PPPAC) 1.00–2.52. The CHAP and MS-CHAP-V2 authentication implementations use the same challenge for subsequent authentication attempts, enabling replay attacks to bypass authentication and potentially grant network access. Red Hat and JVN entries corroborat...