USN-4724-1
- Source
- https://ubuntu.com/security/notices/USN-4724-1
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4724-1.json
- JSON Data
- https://api.osv.dev/v1/vulns/USN-4724-1
- Upstream
- Related
- Published
- 2021-02-08T12:55:14.305377Z
- Modified
- 2025-10-13T04:35:20Z
- Summary
- openldap vulnerabilities
- Details
-
It was discovered that OpenLDAP incorrectly handled Certificate Exact Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36221)
It was discovered that OpenLDAP incorrectly handled saslAuthzTo processing. A remote attacker could use this issue to cause OpenLDAP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-36222, CVE-2020-36224, CVE-2020-36225, CVE-2020-36226)
It was discovered that OpenLDAP incorrectly handled Return Filter control handling. A remote attacker could use this issue to cause OpenLDAP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-36223)
It was discovered that OpenLDAP incorrectly handled certain cancel operations. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36227)
It was discovered that OpenLDAP incorrectly handled Certificate List Extract Assertion processing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36228)
It was discovered that OpenLDAP incorrectly handled X.509 DN parsing. A remote attacker could possibly use this issue to cause OpenLDAP to crash, resulting in a denial of service. (CVE-2020-36229, CVE-2020-36230)
- References
-
- https://ubuntu.com/security/notices/USN-4724-1
- https://ubuntu.com/security/CVE-2020-36221
- https://ubuntu.com/security/CVE-2020-36222
- https://ubuntu.com/security/CVE-2020-36223
- https://ubuntu.com/security/CVE-2020-36224
- https://ubuntu.com/security/CVE-2020-36225
- https://ubuntu.com/security/CVE-2020-36226
- https://ubuntu.com/security/CVE-2020-36227
- https://ubuntu.com/security/CVE-2020-36228
- https://ubuntu.com/security/CVE-2020-36229
- https://ubuntu.com/security/CVE-2020-36230
Affected packages
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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.4.42+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_version": "2.4.42+dfsg-2ubuntu3.12",
"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"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:16.04:LTS",
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36221"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36222"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36223"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36224"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36225"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36226"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36227"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36228"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36229"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36230"
}
]
}
}
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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.4.45+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_version": "2.4.45+dfsg-1ubuntu1.9",
"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"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:18.04:LTS",
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36221"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36222"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36223"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36224"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36225"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36226"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36227"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36228"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36229"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36230"
}
]
}
}
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
-
Introduced0Unknown introduced version / All previous versions are affectedFixed2.4.49+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_version": "2.4.49+dfsg-2ubuntu1.6",
"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"
}
]
}
Database specific
{
"cves_map": {
"ecosystem": "Ubuntu:20.04:LTS",
"cves": [
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36221"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36222"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36223"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36224"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36225"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36226"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36227"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36228"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36229"
},
{
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"id": "CVE-2020-36230"
}
]
}
}