CVE-2013-7100 Denial of service in n/a
Remote attackers can crash the Asterisk PBX daemon by sending a malformed 16-bit SMS message, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2013-7100?
CVE-2013-7100 is a medium-severity denial of service vulnerability in Digium Asterisk, published on 19 Dec 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer overflow in the unpacksms16 function in apps/app_sms.c in Asterisk Open Source 1.8.x before 1.8.24.1, 10.x before 10.12.4, and 11.x before 11.6.1; Asterisk with Digiumphones 10.x-digiumphones before 10.12.4-digiumphones; and Certified Asterisk 1.8.x before 1.8.15-cert4 and 11.x before 11.2-cert3 allows remote attackers to cause a denial of service (daemon crash) via a 16-bit SMS message with an odd number of bytes, which triggers an infinite loop.
Weakness: CWE-119
Which versions are affected by CVE-2013-7100?
It affects 3 products.
Products include Digium Asterisk, Digium Asterisk Digiumphones, Digium Certified Asterisk.
How do I fix CVE-2013-7100?
Upgrade to a fixed version.
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-2013-7100 being exploited?
There is no known exploitation of CVE-2013-7100 in the wild and no public exploit code.
Other vulnerabilities in Digium Asterisk
Sources
Also known as DEBIAN-CVE-2013-7100, DSA-2835-1, GHSA-6wfw-q7f5-wr2c, MGASA-2013-0384.