CVE-2005-2700 Auth bypass in n/a

Critical 10.0 Published Updated

Remote attackers can bypass SSL client certificate authentication restrictions in Apache mod_ssl when specific optional verification configurations are used.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2005-2700?

CVE-2005-2700 is a critical authentication bypass vulnerability in Apache Http Server, published on 6 Sep 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ssl_engine_kernel.c in mod_ssl before 2.8.24, when using "SSLVerifyClient optional" in the global virtual host configuration, does not properly enforce "SSLVerifyClient require" in a per-location context, which allows remote attackers to bypass intended access restrictions.

Which versions are affected by CVE-2005-2700?

It affects 3 products.

Products include Apache Http Server, Canonical Ubuntu Linux, Debian Debian Linux.

How do I fix CVE-2005-2700?

Upgrade to a fixed version.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2005-2700 being exploited?

There is no known exploitation of CVE-2005-2700 in the wild and no public exploit code.

All Apache Http Server vulnerabilities

Sources

Also known as DEBIAN-CVE-2005-2700, DSA-807-1, GHSA-6h5v-qgqr-fmq8.

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