Auth bypass in Iij Seil\/b1
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.
Vulnerability class: Broken Authentication
EPSS: 0.014 (68.8th percentile) — read the EPSS interpretation.
Affected products
- Iij Seil\/b1 — versions 1.00, 2.01, 2.10
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_SECUNIA, Vendor Advisory, third-party-advisory)
- cve@mitre.org (vdb-entry, x_refsource_BID)
- cve@mitre.org (x_refsource_JVN, third-party-advisory)
- cve@mitre.org (x_refsource_OSVDB, vdb-entry)
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
- cve@mitre.org (x_refsource_JVNDB, third-party-advisory)