CVE-2024-24560

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. When calls to external contracts are made, we write the input buffer starting at byte 28, and allocate the return buffer to start at byte 0 (overlapping with the input buffer). When checking RETURNDATASIZE for dynamic types, the size is compared only to the minimum allowed size for that type, and not to the returned value's length. As a result, malformed return data can cause the contract to mistake data from the input buffer for returndata. When the called contract returns invalid ABIv2 encoded data, the calling contract can read different invalid data (from the dirty buffer) than the called contract returned.
References
Configurations

Configuration 1 (hide)

cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*

History

12 Feb 2024, 15:23

Type Values Removed Values Added
First Time Vyperlang
Vyperlang vyper
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.3
References () https://github.com/vyperlang/vyper/security/advisories/GHSA-gp3w-2v2m-p686 - () https://github.com/vyperlang/vyper/security/advisories/GHSA-gp3w-2v2m-p686 - Exploit, Vendor Advisory
CPE cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*

02 Feb 2024, 17:15

Type Values Removed Values Added
New CVE

Information

Published : 2024-02-02 17:15

Updated : 2024-02-28 20:54


NVD link : CVE-2024-24560

Mitre link : CVE-2024-24560

CVE.ORG link : CVE-2024-24560


JSON object : View

Products Affected

vyperlang

  • vyper
CWE
CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer