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CVE-2023-42441

MEDIUM
Published 2023-09-18T20:19:26.086Z
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Expert Analysis

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CVSS Score

V3.1
5.3
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2023.03.01
0.001
probability
of exploitation in the wild

There is a 0.1% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-01-25
Exploit Probability
Percentile: 0.394
Higher than 39.4% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
LOW
Availability
NONE

Description

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine (EVM). Starting in version 0.2.9 and prior to version 0.3.10, locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime. This issue is fixed in version 0.3.10. As a workaround, ensure the lock name is a non-empty string.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

vyperlang

vyper

Affected Versions:

>= 0.2.9, < 0.3.10
vyperlang

vyper

Affected Versions:

0.2.9

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed MODERATE

Vyper has incorrect re-entrancy lock when key is empty string

GHSA-3hg2-r75x-g69m

Advisory Details

### Impact Locks of the type `@nonreentrant("")` or `@nonreentrant('')` do not produce reentrancy checks at runtime. ```Vyper @nonreentrant("") # unprotected @external def bar(): pass @nonreentrant("lock") # protected @external def foo(): pass ``` ### Patches Patched in #3605 ### Workarounds The lock name should be a non-empty string. ### References _Are there any links users can visit to find out more?_

Affected Packages

PyPI vyper
ECOSYSTEM: ≥0.2.9 <0.3.10

CVSS Scoring

CVSS Score

5.0

CVSS Vector

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

References

WEB https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m
ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2023-42441
WEB https://github.com/vyperlang/vyper/pull/3605
WEB https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d83
WEB https://github.com/pypa/advisory-database/tree/main/vulns/vyper/PYSEC-2023-305.yaml
PACKAGE https://github.com/vyperlang/vyper

Advisory provided by GitHub Security Advisory Database. Published: September 18, 2023, Modified: November 22, 2024

References

https://github.com/vyperlang/vyper/security/advisories/GHSA-3hg2-r75x-g69m
https://github.com/vyperlang/vyper/pull/3605
https://github.com/vyperlang/vyper/commit/0b740280c1e3c5528a20d47b29831948ddcc6d83
Published: 2023-09-18T20:19:26.086Z
Last Modified: 2024-09-24T18:58:08.589Z
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