Transaction failure via oversized EIP-165 return data
Published Aug 1, 2022 · Updated Apr 23, 2025
Resource exhaustion in OpenZeppelin Contracts before 4.7.2 allows remote attackers to consume unbounded gas through EIP-165 queries. ERC165Checker.supportsERC165InterfaceUnchecked copies an unbounded staticcall result into memory instead of limiting output to the expected 32-byte value. Exploitation requires a calling contract to query an attacker-controlled target; the oversized result exhausts transaction gas and reverts the operation.
Summary
What happened
Resource exhaustion in OpenZeppelin Contracts before 4.7.2 allows remote attackers to consume unbounded gas through EIP-165 queries. ERC165Checker.supportsERC165InterfaceUnchecked copies an unbounded staticcall result into memory instead of limiting output to the expected 32-byte value. Exploitation requires a calling contract to query an attacker-controlled target; the oversized result exhausts transaction gas and reverts the operation.
The record
- CVE
- CVE-2022-35915
- Published
- Aug 1, 2022
- Updated
- Apr 23, 2025
- Vendor
- OpenZeppelin
- Product
- OpenZeppelin Contracts
- Classifications
- CWE-400, CWE-770, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2022CVE publishedPublication date reported by the CVE source.
- Apr 23, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=>=2.0.0 < 4.7.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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