jtdowney/private_address_check · Security
private_address_check contains race condition
- GHSA ID
- GHSA-2xvj-j3qh-x8c3
- CVE ID
- CVE-2018-3759
- Severity
- high
- Published
- Updated
Description
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.
CWEs
- CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
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 ↗