Vulnerability in Openzeppelin Contracts
CVE-2023-30541
OpenZeppelin Contracts is a library for secure smart contract development. A function in the implementation contract may be inaccessible if its selector clashes with one of the proxy's own selectors. Specifically, if the clashing function has a different signature with incompatible ABI encoding, the proxy could revert while attempting to decode the arguments from calldata. The probability of an accidental clash is negligible, but one could be caused deliberately and could cause a reduction in availability. The issue has been fixed in version 4.8.3. As a workaround if a function appears to be inaccessible for this reason, it may be possible to craft the calldata such that ABI decoding does not fail at the proxy and the function is properly proxied through.
EPSS: 0.008 (53.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Openzeppelin Contracts
- Openzeppelin Contracts_upgradeable
- Openzeppelin Openzeppelin-contracts — versions @openzeppelin/contracts: >= 3.2.0, < 4.8.3, @openzeppelin/contracts-upgradeable: >=3.2.0, <4.8.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2023-30541?
- CVE-2023-30541 is a medium-severity vulnerability in Openzeppelin Contracts, classified under CWE-436. CVSS score: 5.3/10. Published 2023-04-17.
- How severe is CVE-2023-30541?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2023-30541 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.