CVE-2018-12520

An issue was discovered in ntopng 3.4 before 3.4.180617. The PRNG involved
in the generation of session IDs is not seeded at program startup. This
results in deterministic session IDs being allocated for active user
sessions. An attacker with foreknowledge of the operating system and
standard library in use by the host running the service and the username of
the user whose session they’re targeting can abuse the deterministic random
number generation in order to hijack the user’s session, thus escalating
their access.