CVE-2009-4409 Auth bypass in n/a
Remote attackers can bypass PPP authentication in SEIL/B1 firmware by replaying static CHAP/MS-CHAP-V2 challenges.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2009-4409?
CVE-2009-4409 is a low-severity authentication bypass vulnerability in n/a, published on 23 Dec 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2009-4409?
It affects 1 product.
Products include Iij Seil\/B1.
How do I fix CVE-2009-4409?
No fix has been published for CVE-2009-4409 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2009-4409 being exploited?
There is no known exploitation of CVE-2009-4409 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-8c96-xx6x-rr2w.