CVE-2016-2337 Code injection in Ruby
A type confusion vulnerability in Ruby's TclTkIp class allows attackers to execute arbitrary code by passing unexpected object types.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2016-2337?
CVE-2016-2337 is a critical code injection vulnerability in Ruby-Lang Ruby, published on 6 Jan 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Type confusion exists in _cancel_eval Ruby's TclTkIp class method. Attacker passing different type of object than String as "retval" argument can cause arbitrary code execution.
Which versions are affected by CVE-2016-2337?
It affects 1 product.
Products include Ruby-Lang Ruby.
How do I fix CVE-2016-2337?
Apply the vendor's patch.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2016-2337 being exploited?
There is no known exploitation of CVE-2016-2337 in the wild and no public exploit code.
Other vulnerabilities in Ruby-Lang Ruby
Sources
Also known as GHSA-f58m-77qc-8gjv, UBUNTU-CVE-2016-2337.