CVE-2016-6870

Name of the Vulnerable Software and Affected Versions HHVM versions prior to 3.15.0

Description The issue is related to out-of-bounds write in certain functions, specifically mb detect encoding, mb send mail, and mb detect order, which can allow attackers to have an unspecified impact. The exact vectors used for the attack are unknown.

Recommendations For versions prior to 3.15.0, update to version 3.15.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the mb detect encoding, mb send mail, and mb detect order functions until the update is applied.