CVE-2017-14100 Command injection in n/a

Critical 9.8 Published 2 Sep 2017 Updated 5 Aug 2024

Attackers can execute arbitrary shell commands via crafted caller-id data in Asterisk's MinivmNotify application when the externnotify option is enabled.

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

What is CVE-2017-14100?

CVE-2017-14100 is a critical command injection vulnerability in Digium Asterisk, published on 2 Sep 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In Asterisk 11.x before 11.25.2, 13.x before 13.17.1, and 14.x before 14.6.1 and Certified Asterisk 11.x before 11.6-cert17 and 13.x before 13.13-cert5, unauthorized command execution is possible. The app_minivm module has an "externnotify" program configuration option that is executed by the MinivmNotify dialplan application. The application uses the caller-id name and number as part of a built string passed to the OS shell for interpretation and execution. Since the caller-id name and number can come from an untrusted source, a crafted caller-id name or number allows an arbitrary shell command injection.

Weakness: CWE-78

Which versions are affected by CVE-2017-14100?

It affects 2 products.

Products include Digium Asterisk, Digium Certified Asterisk.

How do I fix CVE-2017-14100?

Upgrade to a fixed version.

Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.

Is CVE-2017-14100 being exploited?

There is no known exploitation of CVE-2017-14100 in the wild and no public exploit code.

All Digium Asterisk vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-14100, DLA-1122-1, GHSA-rx69-4xhx-6q93, UBUNTU-CVE-2017-14100.