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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.
Publish Date : 2009-12-23 Last Update Date : 2010-01-06
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity High (Specialized access conditions exist. It is hard to exploit and several special conditions must be satisfied to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Bypass a restriction or similar
CWE ID 287

- Products Affected By CVE-2009-4409

# Product Type Vendor Product Version Update Edition Language
1 Hardware IIJ Seil\/b1 1.00 * * * Version Details Vulnerabilities
2 Hardware IIJ Seil\/b1 2.01 * * * Version Details Vulnerabilities
3 Hardware IIJ Seil\/b1 2.10 * * * Version Details Vulnerabilities
4 Hardware IIJ Seil\/b1 2.20 * * * Version Details Vulnerabilities
5 Hardware IIJ Seil\/b1 2.30 * * * Version Details Vulnerabilities
6 Hardware IIJ Seil\/b1 2.40 * * * Version Details Vulnerabilities
7 Hardware IIJ Seil\/b1 2.41 * * * Version Details Vulnerabilities
8 Hardware IIJ Seil\/b1 2.42 * * * Version Details Vulnerabilities
9 Hardware IIJ Seil\/b1 2.50 * * * Version Details Vulnerabilities
10 Hardware IIJ Seil\/b1 2.51 * * * Version Details Vulnerabilities
11 Hardware IIJ Seil\/b1 2.52 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
IIJ Seil\/b1 11

- References For CVE-2009-4409
BID 37293 SEIL/B1 PPP Access Concentrator Authentication Bypass Vulnerability Release Date:2009-12-14
JVNDB JVNDB-2009-000079
OSVDB 61118

- Metasploit Modules Related To CVE-2009-4409

There are not any metasploit modules related to this CVE entry (Please visit for more information)

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