CVE-2020-24386
MEDIUM
6.8
CVSS Score
Published: January 4, 2021 at 04:25 PM UTC
Updated: June 17, 2026 at 03:05 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraDovecot
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Severity
MEDIUM6.8
Exploit prediction
EPSS 3%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%2.2.26 ≤ v < 2.3.13
Affected range stops below 2.3.13, so it looks safe — our inference, not a vendor statement
95%
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://doc.dovecot.org/configuration_manual/hibernation/
- https://dovecot.org/pipermail/dovecot-news/2021-January/000450.html
- https://dovecot.org/security
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/
- https://security.gentoo.org/glsa/202101-01
References (9)
x_refsource_MISCMailing ListThird Party AdvisoryVDB Entry
Source: [email protected]
http://packetstormsecurity.com/files/160842/Dovecot-2.3.11.3-Access-Bypass.htmlMailing Listx_refsource_FULLDISCThird Party Advisory
Source: [email protected]
http://seclists.org/fulldisclosure/2021/Jan/18x_refsource_CONFIRMMailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/01/04/4x_refsource_MISCVendor Advisory
Source: [email protected]
https://doc.dovecot.org/configuration_manual/hibernation/x_refsource_CONFIRMMailing ListVendor Advisory
Source: [email protected]
https://dovecot.org/pipermail/dovecot-news/2021-January/000450.htmlVendor Advisoryx_refsource_FEDORA
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GXDKFLOCUP7I4ELGQ2F4P5TGC6NXMYV7/Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202101-01CVSS
- Attack Vector
- NETWORK
- Complexity
- HIGH
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-Other
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