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CVE-2023-46232 DetailDescriptionera-compiler-vyper is the EraVM Vyper compiler for zkSync Era, a layer 2 rollup that uses zero-knowledge proofs to scale Ethereum. Prior to era-compiler-vype version 1.3.10, a bug prevented the initialization of the first immutable variable for Vyper contracts meeting certain criteria. The problem arises when there is a String or Array with more 256-bit words allocated than initialized. It results in the second word’s index unset, that is effectively set to 0, so the first immutable value with the actual 0 index is overwritten in the ImmutableSimulator. Version 1.3.10 fixes this issue by setting all indexes in advance. The problem will go away, but it will get more expensive if the user allocates a lot of uninitialized space, e.g. `String[4096]`. Upgrading and redeploying affected contracts is the only way of working around the issue. Severity
CVSS 4.0 Severity and Metrics:
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Denotes Vulnerable Software Quick InfoCVE Dictionary Entry:CVE-2023-46232 NVD Published Date: 10/25/2023 NVD Last Modified: 11/06/2023 Source: GitHub, Inc. |