USN-4674-1

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    USN-4674-1

    Published: 4 Jan 2021Last Modified: 22 Apr 2026

    Summary: dovecot vulnerabilities

    Details: 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)

    References: https://ubuntu.com/security/notices/USN-4674-1, https://ubuntu.com/security/CVE-2020-24386, https://ubuntu.com/security/CVE-2020-25275

    Affected packages

    Package

    Name: dovecot

    Purl: pkg:deb/ubuntu/dovecot@1:2.2.22-1ubuntu2.14?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:2.2.22-1ubuntu2.14

    Affected versions

    1:2.2.18-2ubuntu2
    1:2.2.22-1ubuntu1
    1:2.2.22-1ubuntu2
    1:2.2.22-1ubuntu2.1
    1:2.2.22-1ubuntu2.2
    1:2.2.22-1ubuntu2.3
    1:2.2.22-1ubuntu2.4
    1:2.2.22-1ubuntu2.6
    1:2.2.22-1ubuntu2.7
    1:2.2.22-1ubuntu2.8
    1:2.2.22-1ubuntu2.9
    1:2.2.22-1ubuntu2.10
    1:2.2.22-1ubuntu2.11
    1:2.2.22-1ubuntu2.12
    1:2.2.22-1ubuntu2.13

    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
    USN-4674-1 | CVE-DB