Ecosyste.ms: Advisories

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 5 years ago
Updated: 8 months ago

Identifiers: GHSA-2xvj-j3qh-x8c3, CVE-2018-3759
References:

• https://nvd.nist.gov/vuln/detail/CVE-2018-3759
• https://github.com/jtdowney/private_address_check/commit/4068228187db87fea7577f7020099399772bb147
• https://github.com/advisories/GHSA-2xvj-j3qh-x8c3
• https://github.com/rubysec/ruby-advisory-db/blob/master/gems/private_address_check/CVE-2018-3759.yml

Repository: https://github.com/jtdowney/private_address_check
Blast Radius: 0.0

Affected Packages