zksolc is a Solidity compiler for ZKsync. All LLVM versions since 2015 fold `(xor (shl 1, x), -1)` to `(rotl ~1, x)` if run with optimizations enabled. Here `~1` is generated as an unsigned 64 bits number (`2^64-1`). This number is zero-extended to 256 bits on EraVM target while it should have been sign-extended. Thus instead of producing `roti 2^256 - 1, x` the compiler produces `rotl 2^64 - 1, x`. Analysis has shown that no contracts were affected by the date of publishing this advisory. This issue has been addressed in version 1.5.3. Users are advised to upgrade and redeploy all contracts. There are no known workarounds for this vulnerability.
References
Configurations
History
03 Sep 2024, 15:14
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References | () https://github.com/llvm/llvm-project/commit/e48237df95b49a36b8ffceb78c8a58f4be1b4344 - Patch | |
References | () https://github.com/matter-labs/era-compiler-solidity/security/advisories/GHSA-fpx7-8vc6-frjj - Vendor Advisory | |
First Time |
Matter-labs
Matter-labs zksolc |
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CPE | cpe:2.3:a:matter-labs:zksolc:*:*:*:*:*:*:*:* |
30 Aug 2024, 13:00
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Summary |
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29 Aug 2024, 17:15
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New CVE |
Information
Published : 2024-08-29 17:15
Updated : 2024-09-03 15:14
NVD link : CVE-2024-45056
Mitre link : CVE-2024-45056
CVE.ORG link : CVE-2024-45056
JSON object : View
Products Affected
matter-labs
- zksolc
CWE
CWE-682
Incorrect Calculation