CVE-2013-6696 Denial of service in n/a

High 7.1 Published 2 Dec 2013 Updated 6 Aug 2024

Remote attackers can cause a denial of service via malformed DNS responses, requiring Cisco ASA administrators to apply patches.

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-2013-6696?

CVE-2013-6696 is a high-severity denial of service vulnerability in Cisco Adaptive Security Appliance, published on 2 Dec 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Cisco Adaptive Security Appliance (ASA) Software does not properly handle errors during the processing of DNS responses, which allows remote attackers to cause a denial of service (device reload) via a malformed response, aka Bug ID CSCuj28861.

Weakness: CWE-20

Which versions are affected by CVE-2013-6696?

It affects 2 products.

Products include Cisco Adaptive Security Appliance, Cisco Adaptive Security Appliance Software.

How do I fix CVE-2013-6696?

No fix has been published for CVE-2013-6696 yet. Limit exposure of the affected software until one is available.

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-2013-6696 being exploited?

There is no known exploitation of CVE-2013-6696 in the wild and no public exploit code.

All Cisco Adaptive Security Appliance vulnerabilities

Sources

Also known as GHSA-9hqp-f339-9p9p.