Vulnerability CVE-2021-33582
Published: 2021-09-01

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.

Type:

CWE-327

 (Use of a Broken or Risky Cryptographic Algorithm)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Cyrus -> IMAP 

 References:
https://www.cyrusimap.org/imap/download/release-notes/index.html
https://github.com/cyrusimap/cyrus-imapd/commits/master
https://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-released
https://github.com/cyrusimap/cyrus-imapd/security/advisories
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