GHSA-hxhj-hp9m-qwc4
private_address_check vulnerable to bypass of Resolv.getaddresses method
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| RubyGems | private_address_check | < 0.4.0 | 0.4.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2017-0904
- https://github.com/jtdowney/private_address_check/issues/1
- https://github.com/jtdowney/private_address_check/commit/58a0d7fe31de339c0117160567a5b33ad82b46af
- https://hackerone.com/reports/287245
- https://hackerone.com/reports/287835
- https://edoverflow.com/2017/ruby-resolv-bug