Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS01dnAzLXY0aGMtZ3g3Ns0VxA

UUPSUpgradeable vulnerability in @openzeppelin/contracts

Impact

Upgradeable contracts using UUPSUpgradeable may be vulnerable to an attack affecting uninitialized implementation contracts. We will update this advisory with more information soon.

Patches

A fix is included in version 4.3.2 of @openzeppelin/contracts and @openzeppelin/contracts-upgradeable.

Workarounds

Initialize implementation contracts using UUPSUpgradeable by invoking the initializer function (usually called initialize). An example is provided in the forum.

References

Post-mortem.

For more information

If you have any questions or comments about this advisory, or need assistance executing the mitigation, email us at [email protected].

Permalink: https://github.com/advisories/GHSA-5vp3-v4hc-gx76
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01dnAzLXY0aGMtZ3g3Ns0VxA
Source: GitHub Advisory Database
Origin: Unspecified
Severity: Critical
Classification: General
Published: over 2 years ago
Updated: about 1 year ago

CVSS Score: 9.8
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Identifiers: GHSA-5vp3-v4hc-gx76, CVE-2021-41264
References:

• https://github.com/OpenZeppelin/openzeppelin-contracts/security/advisories/GHSA-5vp3-v4hc-gx76
• https://nvd.nist.gov/vuln/detail/CVE-2021-41264
• https://github.com/OpenZeppelin/openzeppelin-contracts/commit/024cc50df478d2e8f78539819749e94d6df60592
• https://forum.openzeppelin.com/t/security-advisory-initialize-uups-implementation-contracts/15301
• https://github.com/advisories/GHSA-5vp3-v4hc-gx76

Repository: https://github.com/OpenZeppelin/openzeppelin-contracts
Blast Radius: 44.5

Affected Packages