HIGH
GHSA-2xvj-j3qh-x8c3
private_address_check contains race condition
Quick fix
GHSA-2xvj-j3qh-x8c3 — private_address_check: upgrade to the fixed version with the command below.
bundle update private_address_checkDetails
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.
Are you affected?
Enter the version of the package you're using.
Affected packages
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-3759[ADVISORY]
- https://github.com/jtdowney/private_address_check/commit/4068228187db87fea7577f7020099399772bb147[WEB]
- https://github.com/advisories/GHSA-2xvj-j3qh-x8c3[ADVISORY]
- https://github.com/jtdowney/private_address_check[PACKAGE]
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/private_address_check/CVE-2018-3759.yml[WEB]