Medium severity · published Jan 4, 2021
CVE-2020-24386
An issue was discovered in Dovecot before 2.3.13
6.8
CVSS
2.8%
EPSS
No
On KEV
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).
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.8% · higher than 86% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
10.0 · source: NVD
DO
Dovecot · Dovecot
2.2.26 before 2.3.13 · source: NVD
FE
Fedora · Fedoraproject
32 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-24386
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-24386
Mailing List
http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html
Mailing List
http://seclists.org/fulldisclosure/2021/Jan/18
Mailing List
http://www.openwall.com/lists/oss-security/2021/01/04/4
Vendor Advisory
https://doc.dovecot.org/configuration_manual/hibernation/
Mailing List
https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
Vendor Advisory
https://dovecot.org/security
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