CVE-2020-28200

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    CVE-2020-28200

    Published: 28 Jun 2021Last Modified: 8 Jul 2026

    Summary:

    Details: The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.

    References: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/, https://dovecot.org/security, https://www.openwall.com/lists/oss-security/2021/06/28/3

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -0503334ab129a18895fde5945440d1806ab2d155

    Affected versions

    2.2.20
    2.2.20.rc1
    2.2.19
    2.2.19.rc2
    2.2.19.rc1
    2.2.18
    2.2.17
    2.2.17.rc2
    2.2.17.rc1
    2.2.16
    2.2.16.rc1
    2.2.15
    2.2.14
    2.2.14.rc1
    2.2.13
    2.2.13.rc1
    2.2.12
    2.2.11
    2.2.10
    2.2.9
    2.2.8
    2.2.7
    2.2.6
    2.2.5
    2.2.4
    2.2.3
    2.2.2
    2.2.1
    2.2.0
    2.2.rc7
    2.2.rc6
    2.2.rc5
    2.2.rc4
    2.2.rc3
    2.2.rc2
    2.2.rc1
    2.2.beta2
    2.2.beta1
    2.2.alpha1

    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-2020-28200 | CVE-DB