UBUNTU-CVE-2021-33515

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    UBUNTU-CVE-2021-33515

    Published: 21 Jun 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2021-33515
    Aliases:
    USN-4993-1

    Summary:

    Details: The submission service in Dovecot before 2.3.15 allows STARTTLS command injection in lib-smtp. Sensitive information can be redirected to an attacker-controlled address.

    References: https://ubuntu.com/security/CVE-2021-33515, https://dovecot.org/pipermail/dovecot-news/2021-June/000457.html, https://dovecot.org/pipermail/dovecot-news/2021-June/000459.html, https://ubuntu.com/security/notices/USN-4993-1, https://www.cve.org/CVERecord?id=CVE-2021-33515

    Affected packages

    Package

    Name: dovecot

    Purl: pkg:deb/ubuntu/dovecot@1:2.3.7.2-1ubuntu3.4?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1:2.3.7.2-1ubuntu3.4

    Affected versions

    1:2.3.4.1-5ubuntu3
    1:2.3.7.2-1ubuntu1
    1:2.3.7.2-1ubuntu2
    1:2.3.7.2-1ubuntu3
    1:2.3.7.2-1ubuntu3.1
    1:2.3.7.2-1ubuntu3.2
    1:2.3.7.2-1ubuntu3.3

    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
    UBUNTU-CVE-2021-33515 | CVE-DB