CVE-2013-5526 Denial of service in n/a

High 7.1 Published 10 Oct 2013 Updated 6 Aug 2024

Remote attackers can cause Cisco 9900 IP phones to reboot by sending crafted SDP packets, resulting in a denial of service.

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-2013-5526?

CVE-2013-5526 is a high-severity denial of service vulnerability in n/a, published on 10 Oct 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Cisco 9900 fourth-generation IP phones do not properly perform SDP negotiation, which allows remote attackers to cause a denial of service (device reboot) via crafted SDP packets, aka Bug ID CSCuf06698.

Weakness: CWE-20

Which versions are affected by CVE-2013-5526?

It affects 2 products.

Products include Cisco Unified Ip Phone 9951, Cisco Unified Ip Phone 9971.

How do I fix CVE-2013-5526?

No fix has been published for CVE-2013-5526 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-2013-5526 being exploited?

There is no known exploitation of CVE-2013-5526 in the wild and no public exploit code.

Sources

Also known as GHSA-2cr2-mqhq-gqp3.