CVE-2020-24386
published 2021-01-04CVE-2020-24386: An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authenticated attacker can trigger unhibernation via attacker-controlled parameters…
PriorityP339medium6.8CVSS 3.1
AVNACHPRLUINSUCHIHAN
EPSS
2.75%
84.5th percentile
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
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | debian_linux | — | — |
| debian | dovecot | < dovecot 1:2.3.13+dfsg1-1 (bookworm) | dovecot 1:2.3.13+dfsg1-1 (bookworm) |
| dovecot | dovecot | >= 0 < 1:2.3.13+dfsg1-1 | 1:2.3.13+dfsg1-1 |
| dovecot | dovecot | >= 0 < 1:2.3.13+dfsg1-1 | 1:2.3.13+dfsg1-1 |
| dovecot | dovecot | >= 0 < 1:2.3.13+dfsg1-1 | 1:2.3.13+dfsg1-1 |
| dovecot | dovecot | >= 0 < 1:2.3.13+dfsg1-1 | 1:2.3.13+dfsg1-1 |
| dovecot | dovecot | >= 0 < 1:2.2.22-1ubuntu2.14 | 1:2.2.22-1ubuntu2.14 |
| dovecot | dovecot | >= 0 < 1:2.2.33.2-1ubuntu4.7 | 1:2.2.33.2-1ubuntu4.7 |
| dovecot | dovecot | >= 0 < 1:2.3.7.2-1ubuntu3.3 | 1:2.3.7.2-1ubuntu3.3 |
| dovecot | dovecot | >= 2.2.26 < 2.3.13 | 2.3.13 |
| fedoraproject | fedora | — | — |
CVSS provenance
nvdv3.16.8MEDIUMCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
nvdv2.04.9MEDIUMAV:N/AC:M/Au:S/C:P/I:P/A:N
osv6.8MEDIUM
vendor_debian6.8MEDIUM
vendor_redhat6.8MEDIUM
vendor_ubuntu6.8MEDIUM
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
GHSA
GHSA-jp3r-27f3-r855: An issue was discovered in Dovecot before 2
ghsa_unreviewed·2022-05-24
CVE-2020-24386 [HIGH] GHSA-jp3r-27f3-r855: An issue was discovered in Dovecot before 2
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).
OSV
CVE-2020-24386: An issue was discovered in Dovecot before 2
osv·2021-01-04·CVSS 6.8
CVE-2020-24386 [MEDIUM] CVE-2020-24386: An issue was discovered in Dovecot before 2
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).
OSV
dovecot vulnerabilities
osv·2021-01-04·CVSS 6.8
CVE-2020-24386 [MEDIUM] dovecot vulnerabilities
dovecot vulnerabilities
It was discovered that Dovecot incorrectly handled certain imap hibernation
commands. A remote authenticated attacker could possibly use this issue to
access other users' email. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-24386)
Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME
parsing. A remote attacker could possibly use this issue to cause Dovecot
to crash, resulting in a denial of service. (CVE-2020-25275)
Red Hat
dovecot: IMAP hibernation function allows mail access
vendor_redhat·2021-01-04·CVSS 6.8
CVE-2020-24386 [MEDIUM] CWE-138 dovecot: IMAP hibernation function allows mail access
dovecot: IMAP hibernation function allows mail access
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).
Mitigation: To mitigate this flaw, ensure that imap_hibernate_timeout is set to 0 or not set at all/commented out in both /etc/dovecot/dovecot.conf or /etc/dovecot/conf.d/20-imap.conf.
Package: dovecot (Red Hat Enterprise Linux 5) - Out of support scope
Package: dovecot (Red Hat Enterprise Linux 6) - Out of support scope
Package: dovecot (Red Hat Enterprise Linux 7) - Out of support scope
Package: dovecot (Red Hat Enterprise Linux 9) - Affected
Ubuntu
Dovecot vulnerabilities
vendor_ubuntu·2021-01-04·CVSS 6.8
CVE-2020-24386 [MEDIUM] Dovecot vulnerabilities
Title: Dovecot vulnerabilities
Summary: Several security issues were fixed in Dovecot.
It was discovered that Dovecot incorrectly handled certain imap hibernation
commands. A remote authenticated attacker could possibly use this issue to
access other users' email. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-24386)
Innokentii Sennovskiy discovered that Dovecot incorrectly handled MIME
parsing. A remote attacker could possibly use this issue to cause Dovecot
to crash, resulting in a denial of service. (CVE-2020-25275)
Instructions: In general, a standard system update will make all the necessary changes.
Debian
CVE-2020-24386: dovecot - An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authent...
vendor_debian·2020·CVSS 6.8
CVE-2020-24386 [MEDIUM] CVE-2020-24386: dovecot - An issue was discovered in Dovecot before 2.3.13. By using IMAP IDLE, an authent...
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).
Scope: local
bookworm: resolved (fixed in 1:2.3.13+dfsg1-1)
bullseye: resolved (fixed in 1:2.3.13+dfsg1-1)
forky: resolved (fixed in 1:2.3.13+dfsg1-1)
sid: resolved (fixed in 1:2.3.13+dfsg1-1)
trixie: resolved (fixed in 1:2.3.13+dfsg1-1)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlhttp://seclists.org/fulldisclosure/2021/Jan/18http://www.openwall.com/lists/oss-security/2021/01/04/4https://doc.dovecot.org/configuration_manual/hibernation/https://dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlhttps://dovecot.org/securityhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/https://security.gentoo.org/glsa/202101-01https://www.debian.org/security/2021/dsa-4825http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlhttp://seclists.org/fulldisclosure/2021/Jan/18http://www.openwall.com/lists/oss-security/2021/01/04/4https://doc.dovecot.org/configuration_manual/hibernation/https://dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlhttps://dovecot.org/securityhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/https://security.gentoo.org/glsa/202101-01https://www.debian.org/security/2021/dsa-4825
2021-01-04
Published