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CVE-2021-46320

Common vulnerabilities & exposures (CVE)

CVE databaseCVE database blogpostRelease & EoL database
 
Published at: - 04-02-2022 01:15
Last modified: - 09-02-2022 04:30
Total changes: - 2

Description

In OpenZeppelin <=v4.4.0, initializer functions that are invoked separate from contract creation (the most prominent example being minimal proxies) may be reentered if they make an untrusted non-view external call. Once an initializer has finished running it can never be re-executed. However, an exception put in place to support multiple inheritance made reentrancy possible, breaking the expectation that there is a single execution.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Low
Attack complexity
Network
Attack vector
None
Availability
None
Confidentiality
High
Integrity
None
Privileges required
Unchanged
Scope
None
User interaction
7.5
Base score
3.9
3.6
Exploitability score
Impact score
 

Verification logic

OR
vendor=openzeppelin AND product=openzeppelin AND versionEndIncluding=4.4.0 AND versionStartIncluding=3.2.0
 

Reference

 


Keywords

NVD

 

CVE-2021-46320

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures

 

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