CVE Tools

CVE-2009-4409

Published: Dec 23, 2009Updated: Apr 23, 2026 Sources: CVE List NVDCWE-287

No Known Exploits

Patch Available

Description

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 Vector Breakdown

Exploitability

AV:NAccess Vector

Network

AC:HAccess Complexity

High

Au:NAuthentication

None

Impact

C:NConfidentiality

None

I:PIntegrity

Partial

A:NAvailability

None

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Weaknesses

Affected Products

On-prem

Enterprise Software / itsm-monitoring

iijcommercialJPEnterprise Softwareaka iij

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques

Initial Access

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References

http://secunia.com/advisories/37628

http://www.securityfocus.com/bid/37293

securityfocus.com

http://jvn.jp/en/jp/JVN49602378/index.html

and 3 more references View all →

Timeline

Published

Dec 23, 2009

Last Updated

Apr 23, 2026

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