CVE-2017-17090 Denial of service in n/a

High 7.5 Published 2 Dec 2017 Updated 5 Aug 2024

Flooding the SCCP channel driver causes excessive memory usage, leading to a denial of service in Asterisk PBX systems.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2017-17090?

CVE-2017-17090 is a high-severity denial of service vulnerability in Digium Asterisk, published on 2 Dec 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in chan_skinny.c in Asterisk Open Source 13.18.2 and older, 14.7.2 and older, and 15.1.2 and older, and Certified Asterisk 13.13-cert7 and older. If the chan_skinny (aka SCCP protocol) channel driver is flooded with certain requests, it can cause the asterisk process to use excessive amounts of virtual memory, eventually causing asterisk to stop processing requests of any kind.

Weakness: CWE-459

Which versions are affected by CVE-2017-17090?

It affects 2 products.

Products include Digium Asterisk, Digium Certified Asterisk.

How do I fix CVE-2017-17090?

Apply the vendor's patch.

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-2017-17090 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-17090 exists.

Public exploit code: 1 Exploit-DB entry.

All Digium Asterisk vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-17090, DLA-1225-1, DSA-4076-1, GHSA-m542-x3mj-mpgq, UBUNTU-CVE-2017-17090.