CVE-2015-8316 Denial of service in n/a

Medium 5.9 Published Updated

Remote attackers can crash the LightDM display manager via a malformed XDMCP request when the XDMCP server is enabled.

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

What is CVE-2015-8316?

CVE-2015-8316 is a medium-severity denial of service vulnerability in n/a, published on 6 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Array index error in LightDM (aka Light Display Manager) 1.14.3, 1.16.x before 1.16.6 when the XDMCP server is enabled allows remote attackers to cause a denial of service (process crash) via an XDMCP request packet with no address.

Weakness: CWE-129

Which versions are affected by CVE-2015-8316?

It affects 1 product.

Products include Lightdm Project Lightdm.

How do I fix CVE-2015-8316?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-8316 being exploited?

There is no known exploitation of CVE-2015-8316 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2015-8316, GHSA-4p4w-jwhc-qwjq, MGASA-2015-0461.

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