| CVE-2009-4409 | Date: (C)2009-12-23 (M)2023-12-22 |
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.
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V2 Severity: |
| CVSS Score : 2.6 |
| Exploit Score: 4.9 |
| Impact Score: 2.9 |
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| CVSS V2 Metrics: |
| Access Vector: NETWORK |
| Access Complexity: HIGH |
| Authentication: NONE |
| Confidentiality: NONE |
| Integrity: PARTIAL |
| Availability: NONE |
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