Vulnerability Details : 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 category: BypassGain privilege
Exploit prediction scoring system (EPSS) score for CVE-2009-4409
Probability of exploitation activity in the next 30 days: 0.47%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 75 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2009-4409
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
2.6
|
LOW | AV:N/AC:H/Au:N/C:N/I:P/A:N |
4.9
|
2.9
|
NIST |
CWE ids for CVE-2009-4409
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2009-4409
Products affected by CVE-2009-4409
- cpe:2.3:h:iij:seil\/b1:2.30:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.41:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.50:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.40:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.51:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.52:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.01:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.10:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:1.00:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.20:*:*:*:*:*:*:*
- cpe:2.3:h:iij:seil\/b1:2.42:*:*:*:*:*:*:*