CVE-2024-45056
ZKsync Solidity Compiler (xor) Overflow
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.
INFO
Published Date :
Aug. 29, 2024, 5:15 p.m.
Last Modified :
Sept. 3, 2024, 3:14 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2024-45056.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2024-45056 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2024-45056 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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Initial Analysis by [email protected]
Sep. 03, 2024
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://github.com/llvm/llvm-project/commit/e48237df95b49a36b8ffceb78c8a58f4be1b4344 No Types Assigned https://github.com/llvm/llvm-project/commit/e48237df95b49a36b8ffceb78c8a58f4be1b4344 Patch Changed Reference Type https://github.com/matter-labs/era-compiler-solidity/security/advisories/GHSA-fpx7-8vc6-frjj No Types Assigned https://github.com/matter-labs/era-compiler-solidity/security/advisories/GHSA-fpx7-8vc6-frjj Vendor Advisory Added CWE NIST CWE-682 Added CPE Configuration OR *cpe:2.3:a:matter-labs:zksolc:*:*:*:*:*:*:*:* versions up to (excluding) 1.5.3 -
CVE Received by [email protected]
Aug. 29, 2024
Action Type Old Value New Value Added 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. Added Reference GitHub, Inc. https://github.com/matter-labs/era-compiler-solidity/security/advisories/GHSA-fpx7-8vc6-frjj [No types assigned] Added Reference GitHub, Inc. https://github.com/llvm/llvm-project/commit/e48237df95b49a36b8ffceb78c8a58f4be1b4344 [No types assigned] Added CWE GitHub, Inc. CWE-682 Added CVSS V3.1 GitHub, Inc. AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2024-45056 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2024-45056
weaknesses.