USN-4888-1

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Source
https://ubuntu.com/security/notices/USN-4888-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4888-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4888-1
Upstream
Related
Published
2021-03-24T18:08:35.244876Z
Modified
2025-10-13T04:35:26Z
Summary
ldb vulnerabilities
Details

Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain LDAP attributes. A remote attacker could possibly use this issue to cause the LDAP server to crash, resulting in a denial of service. (CVE-2021-20277)

Douglas Bagnall discovered that ldb, when used with Samba, incorrectly handled certain DN strings. A remote attacker could use this issue to cause the LDAP server to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2020-27840)

References

Affected packages

Ubuntu:16.04:LTS / ldb

Package

Name
ldb
Purl
pkg:deb/ubuntu/ldb@2:1.1.24-1ubuntu3.2?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.1.24-1ubuntu3.2

Affected versions

2:1.*

2:1.1.20-2
2:1.1.21-1
2:1.1.23-1
2:1.1.23-1ubuntu1
2:1.1.24-1ubuntu1
2:1.1.24-1ubuntu3
2:1.1.24-1ubuntu3.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "libldb-dev",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "libldb1",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "python-ldb",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "python-ldb-dev",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        },
        {
            "binary_name": "python3-ldb-dev",
            "binary_version": "2:1.1.24-1ubuntu3.2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-27840",
            "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": "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": "high"
                }
            ]
        },
        {
            "id": "CVE-2021-20277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "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": "high"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:16.04:LTS"
}

Ubuntu:18.04:LTS / ldb

Package

Name
ldb
Purl
pkg:deb/ubuntu/ldb@2:1.2.3-1ubuntu0.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.2.3-1ubuntu0.2

Affected versions

2:1.*

2:1.1.29-2
2:1.2.2-2
2:1.2.3-1
2:1.2.3-1ubuntu0.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:1.2.3-1ubuntu0.2"
        },
        {
            "binary_name": "libldb-dev",
            "binary_version": "2:1.2.3-1ubuntu0.2"
        },
        {
            "binary_name": "libldb1",
            "binary_version": "2:1.2.3-1ubuntu0.2"
        },
        {
            "binary_name": "python-ldb",
            "binary_version": "2:1.2.3-1ubuntu0.2"
        },
        {
            "binary_name": "python-ldb-dev",
            "binary_version": "2:1.2.3-1ubuntu0.2"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-27840",
            "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": "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": "high"
                }
            ]
        },
        {
            "id": "CVE-2021-20277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "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": "high"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

Ubuntu:20.04:LTS / ldb

Package

Name
ldb
Purl
pkg:deb/ubuntu/ldb@2:2.0.10-0ubuntu0.20.04.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:2.0.10-0ubuntu0.20.04.3

Affected versions

2:1.*

2:1.5.5-0ubuntu2
2:1.5.5-0ubuntu3

2:2.*

2:2.0.7-4
2:2.0.8-1ubuntu1
2:2.0.8-2
2:2.0.10-0ubuntu0.20.04.1
2:2.0.10-0ubuntu0.20.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:2.0.10-0ubuntu0.20.04.3"
        },
        {
            "binary_name": "libldb-dev",
            "binary_version": "2:2.0.10-0ubuntu0.20.04.3"
        },
        {
            "binary_name": "libldb2",
            "binary_version": "2:2.0.10-0ubuntu0.20.04.3"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:2.0.10-0ubuntu0.20.04.3"
        },
        {
            "binary_name": "python3-ldb-dev",
            "binary_version": "2:2.0.10-0ubuntu0.20.04.3"
        }
    ]
}

Database specific

cves_map

{
    "cves": [
        {
            "id": "CVE-2020-27840",
            "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": "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": "high"
                }
            ]
        },
        {
            "id": "CVE-2021-20277",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H"
                },
                {
                    "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": "high"
                }
            ]
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}