Home/CVE/The private_address_check ruby gem before 0.4.0 is vulnerable to a bypass due to use of Ruby's Resolv.getaddresses metho
CVE

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 metho

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.

HIGH · CVSS 8.1 EPSS 0.00862
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-242Use of Inherently Dangerous Function
CWE-755Improper Handling of Exceptional Conditions
▤

Affected Products & Versions

1
private address check project private address check< 0.4.0
▤

Affected Packages

1
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
RubyGems private_address_check MODERATE fixed in 0.4.0
▣

Scoring & Timeline

8.1
HIGH · CVSS v3.0 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD13 Nov 2017 · 05:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://edoverflow.com/2017/ruby-resolv-bug/Issue TrackingThird Party Advisory
https://github.com/jtdowney/private_address_check/commit/58a0d7fe31de339c0117160567a5b33ad82b46afThird Party Advisory
https://github.com/jtdowney/private_address_check/issues/1Issue TrackingThird Party Advisory
https://hackerone.com/reports/287245Issue TrackingMitigationPatchThird Party Advisory
https://hackerone.com/reports/287835Permissions RequiredThird Party Advisory
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