system
Describe <CVE-2011-4815>.
user
What is <CVE-2011-4815>?
assistant
Ruby (aka CRuby) before 1.8.7-p357 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table..