CVE-2018-3759: Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

June 13, 2018 (updated October 9, 2019)

The private_address_check ruby gem 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.

References

nvd.nist.gov/vuln/detail/CVE-2018-3759

Code Behaviors & Features

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