CVEvulnerability

CVE-2020-24386

6.8 MEDIUM Published 2021-01-04 Modified 2026-06-17 Official page ↗

Status: Modified
Published: 2021-01-04
Last modified: 2026-06-17
Assigner: [email protected]
CVSS 3.1 ([email protected]): 6.8 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS 2.0 ([email protected]): 4.9 MEDIUM — AV:N/AC:M/Au:S/C:P/I:P/A:N

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).

Affected configurations

• dovecot dovecot (>= 2.2.26 < 2.3.13) • debian debian linux 10.0 • fedoraproject fedora 32

References

http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html Mailing List, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Jan/18 Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/04/4 Mailing List, Third Party Advisory
https://doc.dovecot.org/configuration_manual/hibernation/ Vendor Advisory
https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html Mailing List, Vendor Advisory
https://dovecot.org/security Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/ lists.fedoraproject.org
https://security.gentoo.org/glsa/202101-01 Third Party Advisory
https://www.debian.org/security/2021/dsa-4825 Third Party Advisory
http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.html Mailing List, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Jan/18 Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/01/04/4 Mailing List, Third Party Advisory
https://doc.dovecot.org/configuration_manual/hibernation/ Vendor Advisory
https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html Mailing List, Vendor Advisory
https://dovecot.org/security Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/ lists.fedoraproject.org
https://security.gentoo.org/glsa/202101-01 Third Party Advisory
https://www.debian.org/security/2021/dsa-4825 Third Party Advisory