Buffer Overflow Affecting vyper package, versions [,0.3.8)
Threat Intelligence
Exploit Maturity
Proof of concept
EPSS
0.07% (34th
percentile)
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Test your applications- Snyk ID SNYK-PYTHON-VYPER-5498580
- published 7 May 2023
- disclosed 5 May 2023
- credit ToonVanHove, trocher
Introduced: 5 May 2023
CVE-2023-30837 Open this link in a new tabHow to fix?
Upgrade vyper to version 0.3.8 or higher.
Overview
vyper is a Pythonic Smart Contract Language for the EVM.
Affected versions of this package are vulnerable to Buffer Overflow. The storage allocator does not guard against allocation overflows.
PoC
owner: public(address)
take_up_some_space: public(uint256[10])
buffer: public(uint256[max_value(uint256)])
@external
def initialize():
self.owner = msg.sender
@external
def foo(idx: uint256, data: uint256):
self.buffer[idx] = data
References
CVSS Scores
version 3.1