cve/2017/CVE-2017-0904.md

CVE-2017-0904

Description

The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses method, which is OS-dependent and should not be relied upon for security measures, such as when used to blacklist private network addresses to prevent server-side request forgery.

POC

Reference

• https://edoverflow.com/2017/ruby-resolv-bug/
• https://github.com/jtdowney/private_address_check/issues/1
• https://hackerone.com/reports/287245

Github

No PoCs found on GitHub currently.