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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTJ4dmotajNxaC14OGMz

private_address_check contains race condition

The private_address_check ruby gem before 0.5.0 is vulnerable to a time-of-check time-of-use (TOCTOU) race condition due to the address the socket uses not being checked. DNS entries with a TTL of 0 can trigger this case where the initial resolution is a public address but the subsequent resolution is a private address.

Permalink: https://github.com/advisories/GHSA-2xvj-j3qh-x8c3
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTJ4dmotajNxaC14OGMz
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 6 years ago
Updated: about 1 year ago


Identifiers: GHSA-2xvj-j3qh-x8c3, CVE-2018-3759
References: Repository: https://github.com/jtdowney/private_address_check
Blast Radius: 0.0

Affected Packages

rubygems:private_address_check
Dependent packages: 0
Dependent repositories: 434
Downloads: 1,877,483 total
Affected Version Ranges: < 0.5.0
Fixed in: 0.5.0
All affected versions: 0.1.0, 0.2.0, 0.3.0, 0.4.0, 0.4.1
All unaffected versions: 0.5.0