CVE-2020-24386: debian debian_linux
CVSS: 6.8v3.1MediumModified
AliasesALPINE-CVE-2020-24386SUSE-SU-2021:0018-1UBUNTU-CVE-2020-24386DEBIAN-CVE-2020-24386
Published 04-01-2021Last modified 04-08-2024
Vulnerability summary
CVE-2020-24386 is a medium (CVSS 6.8) vulnerability in debian debian_linux. EPSS estimates a 2.78% chance of exploitation in the next 30 days, higher than 86.2% of scored vulnerabilities.
CVSS score
6.8/10
010
Medium · v3.1 (NVD)EPSS score
2.78%
0%100%
Low · +0.03 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 12 · Related 8Timeline
- 04-01-2021PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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 metrics
5 scores · 4 sources · 2 versionsMedium 6.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:NSourcesAll 4 agree
- OSV · AlpineEcosystem advisory · calculated6.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- OSV · UbuntuEcosystem advisory · calculated6.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
- OSV · DebianEcosystem advisory · calculated6.8MediumCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Medium 4.9Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:P/I:P/A:NSourcesSingle source
EPSS trend
Probability
2.78%
Chance of exploitation in the next 30 days
Percentile
86%
Versus all other CVEs
30-day change
+0.03 pp
From 2.75% on 20-09-2026
20-09-202620-10-2026
EPSS score2.78%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Suse18 products
- dovecot22&distro=HPE Helion OpenStack 8< 2.2.31-19.25.1
- dovecot22&distro=SUSE Enterprise Storage 5< 2.2.31-19.25.1
- dovecot22&distro=SUSE Linux Enterprise Server 12 SP2-BCL< 2.2.31-19.25.1
- dovecot22&distro=SUSE Linux Enterprise Server 12 SP2-LTSS< 2.2.31-19.25.1
- dovecot22&distro=SUSE Linux Enterprise Server 12 SP3-BCL< 2.2.31-19.25.1
Debian2 products
- dovecot< 1:2.3.13+dfsg1-1
- debian_linuxEOL10.0
Alpine1 product
- dovecot≥ 2.2.26, < 2.3.13-r0
Dovecot1 product
- dovecot≥ 2.2.26, < 2.3.13
Fedoraproject1 product
- fedoraEOL32
Ubuntu1 product
- dovecot< 1:2.2.33.2-1ubuntu4.7 | < 1:2.3.7.2-1ubuntu3.3
6 vendors · 24 products
References
17 links- dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlX Refsource CONFIRMMailing ListVendor Advisory
- packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlX Refsource MISCMailing ListThird Party AdvisoryVDB Entry