CVE-2024-22419

Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. The `concat` built-in can write over the bounds of the memory buffer that was allocated for it and thus overwrite existing valid data. The root cause is that the `build_IR` for `concat` doesn't properly adhere to the API of copy functions (for `>=0.3.2` the `copy_bytes` function). A contract search was performed and no vulnerable contracts were found in production. The buffer overflow can result in the change of semantics of the contract. The overflow is length-dependent and thus it might go unnoticed during contract testing. However, certainly not all usages of concat will result in overwritten valid data as we require it to be in an internal function and close to the return statement where other memory allocations don't occur. This issue has been addressed in 0.4.0.
Configurations

Configuration 1 (hide)

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

History

09 Oct 2024, 20:15

Type Values Removed Values Added
Summary (en) Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. The `concat` built-in can write over the bounds of the memory buffer that was allocated for it and thus overwrite existing valid data. The root cause is that the `build_IR` for `concat` doesn't properly adhere to the API of copy functions (for `>=0.3.2` the `copy_bytes` function). A contract search was performed and no vulnerable contracts were found in production. The buffer overflow can result in the change of semantics of the contract. The overflow is length-dependent and thus it might go unnoticed during contract testing. However, certainly not all usages of concat will result in overwritten valid data as we require it to be in an internal function and close to the return statement where other memory allocations don't occur. This issue has been addressed in commit `55e18f6d1` which will be included in future releases. Users are advised to update when possible. (en) Vyper is a Pythonic Smart Contract Language for the Ethereum Virtual Machine. The `concat` built-in can write over the bounds of the memory buffer that was allocated for it and thus overwrite existing valid data. The root cause is that the `build_IR` for `concat` doesn't properly adhere to the API of copy functions (for `>=0.3.2` the `copy_bytes` function). A contract search was performed and no vulnerable contracts were found in production. The buffer overflow can result in the change of semantics of the contract. The overflow is length-dependent and thus it might go unnoticed during contract testing. However, certainly not all usages of concat will result in overwritten valid data as we require it to be in an internal function and close to the return statement where other memory allocations don't occur. This issue has been addressed in 0.4.0.

26 Jan 2024, 18:10

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 9.8
CPE cpe:2.3:a:vyperlang:vyper:*:*:*:*:*:python:*:*
First Time Vyperlang vyper
Vyperlang
CWE CWE-120 CWE-787
References () https://github.com/vyperlang/vyper/commit/55e18f6d128b2da8986adbbcccf1cd59a4b9ad6f - () https://github.com/vyperlang/vyper/commit/55e18f6d128b2da8986adbbcccf1cd59a4b9ad6f - Patch
References () https://github.com/vyperlang/vyper/security/advisories/GHSA-2q8v-3gqq-4f8p - () https://github.com/vyperlang/vyper/security/advisories/GHSA-2q8v-3gqq-4f8p - Exploit, Vendor Advisory
References () https://github.com/vyperlang/vyper/issues/3737 - () https://github.com/vyperlang/vyper/issues/3737 - Exploit, Issue Tracking, Vendor Advisory

18 Jan 2024, 19:25

Type Values Removed Values Added
New CVE

Information

Published : 2024-01-18 19:15

Updated : 2024-10-09 20:15


NVD link : CVE-2024-22419

Mitre link : CVE-2024-22419

CVE.ORG link : CVE-2024-22419


JSON object : View

Products Affected

vyperlang

  • vyper
CWE
CWE-787

Out-of-bounds Write

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')