CVE-2017-6648 Denial of service in Cisco TelePresence Endpoint Denial of Service Vulnerability

What is CVE-2017-6648?

CVE-2017-6648 is a high-severity denial of service vulnerability in Cisco TelePresence Endpoint Denial of Service Vulnerability, published on 8 Jun 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) of the Cisco TelePresence Codec (TC) and Collaboration Endpoint (CE) Software could allow an unauthenticated, remote attacker to cause a TelePresence endpoint to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a lack of flow-control mechanisms within the software. An attacker could exploit this vulnerability by sending a flood of SIP INVITE packets to the affected device. An exploit could allow the attacker to impact the availability of services and data of the device, including a complete DoS condition. This vulnerability affects the following Cisco TC and CE platforms when running software versions prior to TC 7.3.8 and CE 8.3.0. Cisco Bug IDs: CSCux94002.

Weakness: CWE-399

Which versions are affected by CVE-2017-6648?

It affects 2 products.

Products include Cisco Telepresence Ce Software, Cisco Telepresence Tc Software.

How do I fix CVE-2017-6648?

No fix has been published for CVE-2017-6648 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-2017-6648 being exploited?

There is no known exploitation of CVE-2017-6648 in the wild and no public exploit code.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-6236-r83r-x6q2.