CVE-2023-46232
EraVM Vyper Compiler Immutable State Overwriting Vulnerability
Description
era-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.
INFO
Published Date :
Oct. 25, 2023, 10:15 p.m.
Last Modified :
Nov. 6, 2023, 4:52 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
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-2023-46232.
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-2023-46232 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2023-46232 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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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 06, 2023
Action Type Old Value New Value Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Changed Reference Type https://github.com/matter-labs/era-compiler-vyper/commit/8be305a1b9c68d0fd47dad3434224ed85944ca25 No Types Assigned https://github.com/matter-labs/era-compiler-vyper/commit/8be305a1b9c68d0fd47dad3434224ed85944ca25 Patch Changed Reference Type https://github.com/matter-labs/era-compiler-vyper/security/advisories/GHSA-h8jv-969m-94r4 No Types Assigned https://github.com/matter-labs/era-compiler-vyper/security/advisories/GHSA-h8jv-969m-94r4 Exploit, Vendor Advisory Changed Reference Type https://github.com/matter-labs/era-system-contracts/blob/main/contracts/ImmutableSimulator.sol#L37 No Types Assigned https://github.com/matter-labs/era-system-contracts/blob/main/contracts/ImmutableSimulator.sol#L37 Product Added CWE NIST NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:matter-labs:zkvyper:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.10
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2023-46232 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-2023-46232
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.08 }} 0.02%
score
0.34566
percentile