UBUNTU-CVE-2020-36221

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Source
https://ubuntu.com/security/CVE-2020-36221
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-36221.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2020-36221
Upstream
Downstream
Related
Published
2021-01-26T18:15:00Z
Modified
2025-09-08T16:46:33Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
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).

References

Affected packages

Ubuntu:Pro:14.04:LTS / openldap

Package

Name
openldap
Purl
pkg:deb/ubuntu/openldap@2.4.31-1+nmu2ubuntu8.5+esm7?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.31-1+nmu2ubuntu8.5+esm7

Affected versions

2.*

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

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
        },
        {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
        },
        {
            "binary_name": "libldap2-dev",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
        },
        {
            "binary_name": "slapd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
        },
        {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.31-1+nmu2ubuntu8.5+esm7"
        }
    ]
}

Ubuntu:16.04:LTS / openldap

Package

Name
openldap
Purl
pkg:deb/ubuntu/openldap@2.4.42+dfsg-2ubuntu3.12?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.42+dfsg-2ubuntu3.12

Affected versions

2.*

2.4.41+dfsg-1ubuntu2
2.4.41+dfsg-1ubuntu3
2.4.42+dfsg-2ubuntu1
2.4.42+dfsg-2ubuntu3
2.4.42+dfsg-2ubuntu3.1
2.4.42+dfsg-2ubuntu3.2
2.4.42+dfsg-2ubuntu3.3
2.4.42+dfsg-2ubuntu3.4
2.4.42+dfsg-2ubuntu3.5
2.4.42+dfsg-2ubuntu3.6
2.4.42+dfsg-2ubuntu3.7
2.4.42+dfsg-2ubuntu3.8
2.4.42+dfsg-2ubuntu3.9
2.4.42+dfsg-2ubuntu3.10
2.4.42+dfsg-2ubuntu3.11

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
        },
        {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
        },
        {
            "binary_name": "libldap2-dev",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
        },
        {
            "binary_name": "slapd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
        },
        {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.42+dfsg-2ubuntu3.12"
        }
    ]
}

Ubuntu:18.04:LTS / openldap

Package

Name
openldap
Purl
pkg:deb/ubuntu/openldap@2.4.45+dfsg-1ubuntu1.9?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.45+dfsg-1ubuntu1.9

Affected versions

2.*

2.4.45+dfsg-1ubuntu1
2.4.45+dfsg-1ubuntu1.1
2.4.45+dfsg-1ubuntu1.2
2.4.45+dfsg-1ubuntu1.3
2.4.45+dfsg-1ubuntu1.4
2.4.45+dfsg-1ubuntu1.5
2.4.45+dfsg-1ubuntu1.6
2.4.45+dfsg-1ubuntu1.7
2.4.45+dfsg-1ubuntu1.8

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        },
        {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        },
        {
            "binary_name": "libldap-common",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        },
        {
            "binary_name": "libldap2-dev",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        },
        {
            "binary_name": "slapd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        },
        {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.45+dfsg-1ubuntu1.9"
        }
    ]
}

Ubuntu:20.04:LTS / openldap

Package

Name
openldap
Purl
pkg:deb/ubuntu/openldap@2.4.49+dfsg-2ubuntu1.6?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.4.49+dfsg-2ubuntu1.6

Affected versions

2.*

2.4.48+dfsg-1ubuntu1
2.4.48+dfsg-1ubuntu2
2.4.48+dfsg-1ubuntu3
2.4.48+dfsg-1ubuntu4
2.4.49+dfsg-1ubuntu1
2.4.49+dfsg-2ubuntu1
2.4.49+dfsg-2ubuntu1.2
2.4.49+dfsg-2ubuntu1.3
2.4.49+dfsg-2ubuntu1.4
2.4.49+dfsg-2ubuntu1.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldap-utils",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "libldap-2.4-2",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "libldap-common",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "libldap2-dev",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "slapd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "slapd-contrib",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "slapd-smbk5pwd",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        },
        {
            "binary_name": "slapi-dev",
            "binary_version": "2.4.49+dfsg-2ubuntu1.6"
        }
    ]
}