UBUNTU-CVE-2020-36221

    Dashboard / Vulnerabilities / UBUNTU-CVE-2020-36221

    UBUNTU-CVE-2020-36221

    Published: 26 Jan 2021Last Modified: 22 Apr 2026

    Summary:

    Details: An integer underflow was discovered in OpenLDAP before 2.4.57 leading to slapd crashes in the Certificate Exact Assertion processing, resulting in denial of service (schema_init.c serialNumberAndIssuerCheck).

    Affected packages

    Package

    Name: openldap

    Purl: pkg:deb/ubuntu/[email protected]+nmu2ubuntu8.5+esm7?arch=source&distro=esm-infra-legacy/trusty

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.4.31-1+nmu2ubuntu8.5+esm7

    Affected versions

    2.4.31-1+nmu2ubuntu3
    2.4.31-1+nmu2ubuntu4
    2.4.31-1+nmu2ubuntu5
    2.4.31-1+nmu2ubuntu8
    2.4.31-1+nmu2ubuntu8.1
    2.4.31-1+nmu2ubuntu8.2
    2.4.31-1+nmu2ubuntu8.3
    2.4.31-1+nmu2ubuntu8.4
    2.4.31-1+nmu2ubuntu8.5
    2.4.31-1+nmu2ubuntu8.5+esm1
    2.4.31-1+nmu2ubuntu8.5+esm2
    2.4.31-1+nmu2ubuntu8.5+esm3
    2.4.31-1+nmu2ubuntu8.5+esm4
    2.4.31-1+nmu2ubuntu8.5+esm5
    2.4.31-1+nmu2ubuntu8.5+esm6

    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-2020-36221 | CVE-DB