Secure Smart Contract Development Library Fixes Buffer Overflow Vulnerability
CVE-2024-27094
6.5MEDIUM
What is CVE-2024-27094?
OpenZeppelin Contracts is a library for secure smart contract development. The Base64.encode function encodes a bytes input by iterating over it in chunks of 3 bytes. When this input is not a multiple of 3, the last iteration may read parts of the memory that are beyond the input buffer. The vulnerability is fixed in 5.0.2 and 4.9.6.
Affected Version(s)
openzeppelin-contracts >= 4.5.0, < 4.9.6 < 4.5.0, 4.9.6
openzeppelin-contracts >= 5.0.0-rc.0, < 5.0.2 < 5.0.0-rc.0, 5.0.2