CVE-2020-24386

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    CVE-2020-24386

    Published: 4 Jan 2021Last Modified: 8 Jul 2026

    Summary:

    Details: 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).

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

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 54d654098032d96975b70749b505fae538e97f7a
    Fixed -89f716dc2ec7362864a368d32533184b55fb7831

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2020-24386 | CVE-DB