CVE-2017-12287 Denial of service in Cisco Expressway Series and Cisco TelePresence Video Communication Server

Medium 4.3 Published Updated

An authenticated remote attacker can cause a temporary denial of service by sending a crafted URL to the REST API.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2017-12287?

CVE-2017-12287 is a medium-severity denial of service vulnerability in Cisco Expressway Series and Cisco TelePresence Video Communication Server, published on 19 Oct 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability in the cluster database (CDB) management component of Cisco Expressway Series Software and Cisco TelePresence Video Communication Server (VCS) Software could allow an authenticated, remote attacker to cause the CDB process on an affected system to restart unexpectedly, resulting in a temporary denial of service (DoS) condition. The vulnerability is due to incomplete input validation of URL requests by the REST API of the affected software. An attacker could exploit this vulnerability by sending a crafted URL to the REST API of the affected software on an affected system. A successful exploit could allow the attacker to cause the CDB process on the affected system to restart unexpectedly, resulting in a temporary DoS condition. Cisco Bug IDs: CSCve77571.

Weakness: CWE-20, CWE-399

Which versions are affected by CVE-2017-12287?

It affects 3 products.

Products include Cisco Expressway, Cisco Telepresence Conductor, Cisco Telepresence Video Communication Server.

How do I fix CVE-2017-12287?

No fix has been published for CVE-2017-12287 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-2017-12287 being exploited?

There is no known exploitation of CVE-2017-12287 in the wild and no public exploit code.

Sources

Also known as GHSA-pcx4-96gw-4344.

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