CVE-2017-0898: ruby: Buffer underrun vulnerability in Kernel.sprintf

Severity: Critical

CVSS Score: 9.1

Ruby before 2.4.2, 2.3.5, and 2.2.8 is vulnerable to a malicious format string which contains a precious specifier (*) with a huge minus value. Such situation can lead to a buffer overrun, resulting in a heap memory corruption or an information disclosure from the heap.