CVE-2015-3218 Null dereference in n/a

Low 2.1 Published Updated

Local attackers can crash the polkitd daemon via a NULL pointer dereference in the authentication agent registration process.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2015-3218?

CVE-2015-3218 is a low-severity vulnerability in n/a, published on 26 Oct 2015. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The authentication_agent_new function in polkitbackend/polkitbackendinteractiveauthority.c in PolicyKit (aka polkit) before 0.113 allows local users to cause a denial of service (NULL pointer dereference and polkitd daemon crash) by calling RegisterAuthenticationAgent with an invalid object path.

Which versions are affected by CVE-2015-3218?

It affects 1 product.

Products include Polkit Project Polkit.

How do I fix CVE-2015-3218?

Upgrade to a fixed version.

Is CVE-2015-3218 being exploited?

There is no known exploitation of CVE-2015-3218 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2015-3218, GHSA-q9cc-g5q2-4hhx, UBUNTU-CVE-2015-3218.

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