cve/2021/CVE-2021-33582.md

### [CVE-2021-33582](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33582)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brightgreen)

### Description

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.

### POC

#### Reference
- https://github.com/cyrusimap/cyrus-imapd/commits/master

#### Github
No PoCs found on GitHub currently.