CVE-2009-4409

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Summary

CVECVE-2009-4409
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2009-12-23 21:30:00 UTC
Updated2026-04-23 00:35:47 UTC
DescriptionThe (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.

Risk And Classification

Primary CVSS: v2.0 2.6 from [email protected]

AV:N/AC:H/Au:N/C:N/I:P/A:N

Problem Types: CWE-287 | n/a

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
High
Authentication
None
Confidentiality
None
Integrity
Partial
Availability
None

AV:N/AC:H/Au:N/C:N/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Iij Seil/b1 1.00 All All All
Hardware Iij Seil/b1 2.01 All All All
Hardware Iij Seil/b1 2.10 All All All
Hardware Iij Seil/b1 2.20 All All All
Hardware Iij Seil/b1 2.30 All All All
Hardware Iij Seil/b1 2.40 All All All
Hardware Iij Seil/b1 2.41 All All All
Hardware Iij Seil/b1 2.42 All All All
Hardware Iij Seil/b1 2.50 All All All
Hardware Iij Seil/b1 2.51 All All All
Hardware Iij Seil/b1 2.52 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
SEIL/B1 PPP Access Concentrator Authentication Bypass Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
www.osvdb.org/61118 af854a3a-2127-422b-91ae-364da2661108 www.osvdb.org
IIJ | SEIL Series | [脆弱性情報] af854a3a-2127-422b-91ae-364da2661108 www.seil.jp Vendor Advisory
JVN#49602378 SEIL/B1 authentication issue af854a3a-2127-422b-91ae-364da2661108 jvn.jp
SEIL Routers PPP Access Concentrator Replay Vulnerability - Secunia Advisories - Vulnerability Information - Secunia.com af854a3a-2127-422b-91ae-364da2661108 secunia.com Vendor Advisory
jvndb.jvn.jp/ja/contents/2009/JVNDB-2009-000079.html af854a3a-2127-422b-91ae-364da2661108 jvndb.jvn.jp
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