Products
zksolc Solidity compiler for ZKsync
- 1.5.3
Source
security-advisories@github.com
Tags
CVE-2024-45056 details
Last Modified : Aug. 29, 2024, 5:15 p.m.
Description
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.
CVSS Score
| 1 | 2 | 3 | 4 | 5.9 | 6 | 7 | 8 | 9 | 10 |
|---|
Weakness
| Weakness | Name | Description |
|---|---|---|
| CWE-682 | Incorrect Calculation | The product performs a calculation that generates incorrect or unintended results that are later used in security-critical decisions or resource management. |
CVSS Data
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Base Score
5.9
Exploitability Score
2.2
Impact Score
3.6
Base Severity
MEDIUM
Vector String : CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
References
| URL | Source |
|---|---|
| https://github.com/llvm/llvm-project/commit/e48237df95b49a36b8ffceb78c8a58f4be1b4344 | security-advisories@github.com |
| https://github.com/matter-labs/era-compiler-solidity/security/advisories/GHSA-fpx7-8vc6-frjj | security-advisories@github.com |