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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
2.6 UNKNOWN
NETWORK
HIGH
AV:N/AC:H/Au:N/C:N/I:P/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 52%
VendorProductVersion
iijseil\/b1
1.00
iijseil\/b1
2.01
iijseil\/b1
2.10
iijseil\/b1
2.20
iijseil\/b1
2.30
iijseil\/b1
2.40
iijseil\/b1
2.41
iijseil\/b1
2.42
iijseil\/b1
2.50
iijseil\/b1
2.51
iijseil\/b1
2.52
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
http://jvn.jp/en/jp/JVN49602378/index.html
http://jvndb.jvn.jp/ja/contents/2009/JVNDB-2009-000079.html
http://secunia.com/advisories/37628
http://www.osvdb.org/61118
http://www.securityfocus.com/bid/37293
http://www.seil.jp/seilseries/security/2009/a00697.php
http://jvn.jp/en/jp/JVN49602378/index.html
http://jvndb.jvn.jp/ja/contents/2009/JVNDB-2009-000079.html
http://secunia.com/advisories/37628
http://www.osvdb.org/61118
http://www.securityfocus.com/bid/37293
http://www.seil.jp/seilseries/security/2009/a00697.php