RubySec

Providing security resources for the Ruby community

CVE-2017-0909 (private_address_check): private_address_check Ruby Gem Blacklist Bypass privilege escalation

ADVISORIES

GEM

private_address_check

SEVERITY

CVSS v3: 9.8 (Critical)

CVSS v2: 7.5 (High)

PATCHED VERSIONS

  • >= 0.4.1

DESCRIPTION

The private_address_check ruby gem before 0.4.1 is vulnerable to a bypass due to an incomplete blacklist of common private/local network addresses used to prevent server-side request forgery.