CVE-2009-4409

Internet Initiative Japan SEIL/B1 <2.52 - Auth Bypass

Title source: llm

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.

References (6)

[Third Party Advisory] http://jvn.jp/en/jp/JVN49602378/index.html

[Third Party Advisory] http://jvndb.jvn.jp/ja/contents/2009/JVNDB-2009-000079.html

[Vendor Advisory] http://secunia.com/advisories/37628

[Vendor Advisory] http://www.seil.jp/seilseries/security/2009/a00697.php

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/37293

[Third Party Advisory, VDB Entry] http://www.osvdb.org/61118

Scores

EPSS 0.0029

EPSS Percentile 52.1%

Classification

CWE

CWE-287

Status draft

Affected Products (11)

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

iij/seil\/b1

Timeline

Published Dec 23, 2009

Tracked Since Feb 18, 2026