UBUNTU-CVE-2020-35518

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    UBUNTU-CVE-2020-35518

    Published: 26 Mar 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-35518
    Aliases:
    USN-5231-1

    Summary:

    Details: When binding against a DN during authentication, the reply from 389-ds-base will be different whether the DN exists or not. This can be used by an unauthenticated attacker to check the existence of an entry in the LDAP database.

    References: https://ubuntu.com/security/CVE-2020-35518, https://bugzilla.redhat.com/show_bug.cgi?id=1905565, https://github.com/389ds/389-ds-base/issues/4480, https://ubuntu.com/security/notices/USN-5231-1, https://www.cve.org/CVERecord?id=CVE-2020-35518

    Affected packages

    Package

    Name: 389-ds-base

    Purl: pkg:deb/ubuntu/[email protected]~esm1?arch=source&distro=esm-apps/focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.4.3.6-2ubuntu0.1~esm1

    Affected versions

    1.4.1.6-4
    1.4.1.6-4build1
    1.4.2.4-1
    1.4.2.4-1build1
    1.4.3.2-1
    1.4.3.2-1build1
    1.4.3.6-2

    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-2020-35518 | CVE-DB