Fantom

Quick Summary

A validator wallet was drained for 250k FTM by an attacker during the node setup process on Fantom network. The problem is a
go-opera code bug, allowing users to unlock the local account with http/ws enabled.




Details of the Exploit

The attacker tracked the transfers to the node accounts, so he could know when and how much a validator account would receive, and
taking advantage of the vulnerability, was able to steal money from the node validator. The vulnerability is in the
UnlockAccount() function, in which the ExtRPCEnabled() flag does not work correctly, which makes the entire security check
useless.




As the time of this writing information on this case is scarce. More sources will be added if the case should develop.