Integer Overflow or Wraparound Affecting @ensdomains/ens-contracts package, versions <0.0.22
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-ENSDOMAINSENSCONTRACTS-5813754
- published2 Aug 2023
- disclosed1 Aug 2023
- creditUnknown
Introduced: 1 Aug 2023
CVE-2023-38698 (opens in a new tab)How to fix?
Upgrade @ensdomains/ens-contracts to version 0.0.22 or higher.
Overview
@ensdomains/ens-contracts is an ENS contracts
Affected versions of this package are vulnerable to Integer Overflow or Wraparound. According to the documentation, controllers are allowed to register new domains and extend the expiry of existing domains, but they cannot change the ownership or reduce the expiration time of existing domains. However, a preliminary analysis suggests that an attacker-controlled controller may be able to reduce the expiration time of existing domains due to an integer overflow in the renew function.
The vulnerable line of code is:
require(
expiries[id] + duration + GRACE_PERIOD > duration + GRACE_PERIOD
); // Prevent future overflow