Vulnerability CVE-2020-24386
Published: 2021-01-04

Description:
An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters, leading to access to other users' email messages (and path disclosure).

See advisories in our WLB2 database:
Topic
Author
Date
Med.
Dovecot 2.3.11.3 Access Bypass
Aki Tuomi
07.01.2021

Type:

NVD-CWE-Other

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.9/10
4.9/10
6.8/10
Exploit range
Attack complexity
Authentication
Remote
Medium
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
None
Affected software
Dovecot -> Dovecot 
Debian -> Debian linux 

 References:
http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html
http://seclists.org/fulldisclosure/2021/Jan/18
http://www.openwall.com/lists/oss-security/2021/01/04/4
https://doc.dovecot.org/configuration_manual/hibernation/
https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
https://dovecot.org/security
https://security.gentoo.org/glsa/202101-01
https://www.debian.org/security/2021/dsa-4825
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