CVE-2019-3883

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    CVE-2019-3883

    Published: 17 Apr 2019Last Modified: 16 Apr 2026

    Summary:

    Details: In 389-ds-base up to version 1.4.1.2, requests are handled by workers threads. Each sockets will be waited by the worker for at most 'ioblocktimeout' seconds. However this timeout applies only for un-encrypted requests. Connections using SSL/TLS are not taking this timeout into account during reads, and may hang longer.An unauthenticated attacker could repeatedly create hanging LDAP requests to hang all the workers, resulting in a Denial of Service.

    References: https://lists.debian.org/debian-lts-announce/2023/04/msg00026.html, https://access.redhat.com/errata/RHSA-2019:1896, https://access.redhat.com/errata/RHSA-2019:3401, https://lists.debian.org/debian-lts-announce/2019/05/msg00008.html, https://pagure.io/389-ds-base/pull-request/50331, https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3883, https://pagure.io/389-ds-base/issue/50329

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    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