CVE - CVE-2024-22419

CVE-ID
CVE-2024-22419	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
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.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/vyperlang/vyper/commit/55e18f6d128b2da8986adbbcccf1cd59a4b9ad6f URL:https://github.com/vyperlang/vyper/commit/55e18f6d128b2da8986adbbcccf1cd59a4b9ad6f MISC:https://github.com/vyperlang/vyper/issues/3737 URL:https://github.com/vyperlang/vyper/issues/3737 MISC:https://github.com/vyperlang/vyper/security/advisories/GHSA-2q8v-3gqq-4f8p URL:https://github.com/vyperlang/vyper/security/advisories/GHSA-2q8v-3gqq-4f8p
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20240110	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20240110)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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