CVE-2024-34704 - CVE House
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Status published Medium CVE-2024-34704

era-compiler-solidity contains a `xor(zext(cmp), -1)` misoptimization

Vulnerability Description

era-compiler-solidity is the ZKsync compiler for Solidity. The problem occurred during instruction selection in the `DAGCombine` phase while visiting the XOR operation. The issue arises when attempting to fold the expression `!(x cc y)` into `(x !cc y)`. To perform this transformation, the second operand of XOR should be a constant representing the true value. However, it was incorrectly assumed that -1 represents the true value, when in fact, 1 is the correct representation, so this transformation for this case should be skipped. This vulnerability is fixed in 1.4.1.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Affected Vendor

matter-labs

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Affected Software

era-compiler-solidity
Vulnerable Versions:
>= 1.2.0, <= 1.4.0

Timeline

Official Publish: May 13th, 2024
Last Modified: August 2nd, 2024
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weaknesses (CWE)

CWE-682

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.