CVE-2015-2091 Auth bypass in n/a
Remote attackers can spoof client identities by bypassing certificate validation in mod-gnutls when client verification is required.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-2091?
CVE-2015-2091 is a medium-severity authentication bypass vulnerability in n/a, published on 13 Mar 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when "GnuTLSClientVerify require" is set, which allows remote attackers to spoof clients via a crafted certificate.
Weakness: CWE-310
Which versions are affected by CVE-2015-2091?
It affects 1 product.
Products include Apache Mod-Gnutls.
How do I fix CVE-2015-2091?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2015-2091 being exploited?
There is no known exploitation of CVE-2015-2091 in the wild and no public exploit code.
Sources
Also known as DLA-170-1, DSA-3177-1, GHSA-pgq5-v38c-mjg3.