CVE-2009-4409
N/A
Published: December 23, 2009 at 09:00 PM UTC
Updated: June 16, 2026 at 11:13 PM UTC
1 product affected across 1 vendorSeil /b1
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Severity
N/A
Exploit prediction
EPSS 1%
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.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (6)
Third Party Advisoryx_refsource_JVN
Source: [email protected]
http://jvn.jp/en/jp/JVN49602378/index.htmlThird Party Advisoryx_refsource_JVNDB
Source: [email protected]
http://jvndb.jvn.jp/ja/contents/2009/JVNDB-2009-000079.htmlThird Party Advisoryx_refsource_SECUNIAVendor Advisory
Source: [email protected]
http://secunia.com/advisories/37628x_refsource_CONFIRMVendor Advisory
Source: [email protected]
http://www.seil.jp/seilseries/security/2009/a00697.phpQuick Info
StatusMODIFIED
CWE
CWE-287
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