CVE-2023-30837

Vyper storage allocator overflow

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Vyper is a pythonic smart contract language for the EVM. The storage allocator does not guard against allocation overflows in versions prior to 0.3.8. An attacker can overwrite the owner variable. This issue was fixed in version 0.3.8.

*Credits: N/A

CVSS Scores

NISTv3.1 7.5

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2023-04-18 CVE Reserved
2023-05-08 CVE Published
2024-08-02 CVE Updated
2024-08-02 First Exploit
2024-10-18 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-789: Memory Allocation with Excessive Size Value

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
https://github.com/vyperlang/vyper/security/advisories/GHSA-mgv8-gggw-mrg6	2024-08-02

URL	Date	SRC
https://github.com/vyperlang/vyper/commit/0bb7203b584e771b23536ba065a6efda457161bb	2023-08-02

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Vyperlang Search vendor "Vyperlang"		Vyper Search vendor "Vyperlang" for product "Vyper"				< 0.3.8 Search vendor "Vyperlang" for product "Vyper" and version " < 0.3.8"		-		Affected