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.

Score

CVSS 2.0 2.6 Low

Status

Modified - cve@mitre.org

Published

2009-12-23

Last modified

2024-09-17

Weaknesses

CWE-287

Affected products

• Seil/b1 (Iij)

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