CVE-2017-0904

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.

Score

CVSS 3.0 8.1 High

Status

Modified - support@hackerone.com

Published

2017-11-13

Last modified

2024-09-17

Weaknesses

CWE-242, CWE-755

Affected products

• Private Address Check Ruby Gem (Jtdowney)
• Private Address Check (Private Address Check Project)

References

• https://edoverflow.com/2017/ruby-resolv-bug/
• https://github.com/jtdowney/private_address_check/commit/58a0d7fe31de339c0117160567a5b33ad82b46af
• https://github.com/jtdowney/private_address_check/issues/1
• https://hackerone.com/reports/287245
• https://hackerone.com/reports/287835