NullMeridianLog

18 Jul 2024

WazirX: Multisig Payload Mismatch on Liminal Custody UI

WazirX: on 18 Jul 2024 a cyber attack on one Liminal-operated multisig wallet lost funds exceeding $230M. WazirX says the UI showed one transaction while a different payload was signed.

  • Event date
  • Incident typeExchange custody compromise
  • Bug classSocial engineering
  • Published

Loss, as sourced

Funds exceeding $230 million from one multisig wallet, per WazirX. Affected wallet 0x27fD43BABfbe83a81d14665b1a6fB8030A60C9b4.

Traceability

Primary sources

  1. 01wazirx.comWazirX Preliminary Report, 18 Jul 2024 (opens in a new tab)

In brief

Root cause: Per WazirX: discrepancy between Liminal interface display and signed contents; suspects payload replaced to transfer wallet control. Six signatories (five WazirX, one Liminal); three WazirX Ledger signatures plus Liminal final approval; destination whitelist in place.

Timeline, as sourced: Per WazirX: Liminal custody from Feb 2023; incident and preliminary report 18 Jul 2024.

Account, as sourced

Claimed (WazirX) (report (opens in a new tab)): >$230M; UI/payload mismatch; Gnosis Safe and whitelist did not prevent the theft.

Unknown: Liminal's own technical account.

Summaries of public sources as of the published date; except where marked (on-chain), not independently verified by NullMeridian. Figures are the sources’ own and are attributed; where sources disagree, each is given. Sources may since have changed. Not legal, financial or investment advice.