CVE-2024-27094 — Out-of-bounds Read in Contracts
Severity
7.4HIGHNVD
EPSS
0.6%
top 31.59%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
Latest updateFeb 29
PublishedMar 21
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:HExploitability: 2.2 | Impact: 5.2