Secure Smart Contract Development Library Fixes Buffer Overflow Vulnerability
CVE-2024-27094

6.5MEDIUM

Key Information:

Vendor

Openzeppelin

Status
Openzeppelin-contracts
Vendor
CVE Published:
21 March 2024

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.

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Deploy the Patch

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

References

https://github.com/OpenZeppelin/openzeppelin-contracts/se...
x_refsource_CONFIRM
https://github.com/OpenZeppelin/openzeppelin-contracts-up...
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https://github.com/OpenZeppelin/openzeppelin-contracts-up...
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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