CVE-2009-3941 Security feature bypass in n/a

Medium 5.0 Published Updated

Man-in-the-middle attackers can spoof SSL servers via crafted certificates due to improper null character handling in mpop.

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-2009-3941?

CVE-2009-3941 is a medium-severity vulnerability in n/a, published on 16 Nov 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Martin Lambers mpop before 1.0.19, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the (1) subject's Common Name or (2) Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

Weakness: CWE-310

Which versions are affected by CVE-2009-3941?

It affects 1 product.

Products include Martin Lambers Mpop.

How do I fix CVE-2009-3941?

No fix has been published for CVE-2009-3941 yet. Limit exposure of the affected software until one is available.

Is CVE-2009-3941 being exploited?

There is no known exploitation of CVE-2009-3941 in the wild and no public exploit code.

Sources

Also known as GHSA-37wj-ffhc-82xv.

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