Threats tagged 'ghsa-ww9q-8r59-xv46'

A soundness vulnerability in the variable-base scalar multiplication gadget of halo2_gadgets in the Zebrad product allowed a malicious prover to bypass the diversified-address-integrity check in Orchard Actions. This flaw enabled an adversary to produce valid proofs with an under-constrained base point, effectively allowing double-spends within the Orchard pool or theft of funds by forging spend authorizations. Exploitation is undetectable on-chain and could result in balance violations within the Orchard pool without inflating the overall ZEC supply. The vulnerability existed since the Orchard pool introduction in May 2022 and has been remediated. No evidence of exploitation prior to the fix is known.