CVE-2018-3759

The CVE concerns the Ruby gem private_address_check (pre-0.5.0). It describes a TOCTOU race condition caused by not checking the socket’s destination address, where a DNS entry with TTL 0 can yield a public address initially and a private address subsequently. Multiple connected sources (GitHub a...

CVE-2018-3759

privateaddresscheck 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...