In short
- CVE-2018-3759 is a LOW (CVSS 3.7) vulnerability affecting private_address_check, private address check (private address check project).
- Chance of exploitation in the next 30 days (EPSS): 0.68%, higher than 52.6% of all vulnerabilities.
- Fix: update to 0.5.0 or later.
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.
NVD description
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.
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