CVE-2017-6630 Denial of service in Cisco IP Phone 8851
An unauthenticated remote attacker can cause a denial of service on Cisco IP Phones by sending a manipulated SIP CANCEL packet.
- 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-2017-6630?
CVE-2017-6630 is a medium-severity denial of service vulnerability in Cisco IP Phone 8851, published on 22 May 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Session Initiation Protocol (SIP) implementation of Cisco IP Phone 8851 11.0(0.1) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to an abnormal SIP message. An attacker could exploit this vulnerability by manipulating the CANCEL packet. An exploit could allow the attacker to cause a disruption of service to the phone. Cisco Bug IDs: CSCvc34795.
Weakness: CWE-399
Which versions are affected by CVE-2017-6630?
It affects 1 product.
Products include Cisco Ip Phone 8800 Series Firmware.
How do I fix CVE-2017-6630?
No fix has been published for CVE-2017-6630 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-2017-6630 being exploited?
There is no known exploitation of CVE-2017-6630 in the wild and no public exploit code.
Other vulnerabilities in Cisco IP Phone 8851
Sources
Also known as GHSA-mjvw-x9c4-59fp.