Parity Wallet - Critical Security Alert

  • Severity: Critical

    Product affected: Parity Wallet (multi-sig wallets)

    Summary: A vulnerability in the Parity Wallet library contract of the standard multi-sig contract has been found.

    Affected users: Users with assets in a multi-sig wallet created in Parity Wallet that was deployed after 20th July.

    Following the fix for the original multi-sig issue that had been exploited on 19th of July (function visibility), a new version of the Parity Wallet library contract was deployed on 20th of July. However that code still contained another issue — it was possible to turn the Parity Wallet library contract into a regular multi-sig wallet and become an owner of it by calling the initWalletfunction. It would seem that issue was triggered accidentally 6th Nov 2017 02:33:47 PM +UTC and subsequently a user suicided the library-turned-into-wallet, wiping out the library code which in turn rendered all multi-sig contracts unusable since their logic (any state-modifying function) was inside the library.

    All dependent multi-sig wallets that were deployed after 20th July functionally now look as follows:

    contract Wallet {  
        function () payable {

    This means that currently no funds can be moved out of the multi-sig wallets.

    We are analysing the situation and will release an update with further details shortly.

Looks like your connection to Cryptocentral was lost, please wait while we try to reconnect.