USN-5959-1

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Source
https://ubuntu.com/security/notices/USN-5959-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5959-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-5959-1
Upstream
Related
Published
2023-03-16T07:06:07.394073Z
Modified
2025-10-13T04:36:18Z
Summary
krb5 vulnerabilities
Details

It was discovered that Kerberos incorrectly handled memory when processing KDC data, which could lead to a NULL pointer dereference. An attacker could possibly use this issue to cause a denial of service or have other unspecified impacts. (CVE-2021-36222, CVE-2021-37750)

References

Affected packages

Ubuntu:18.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.16-2ubuntu0.4

Affected versions

1.*

1.15.1-2
1.16-2
1.16-2build1
1.16-2ubuntu0.1
1.16-2ubuntu0.2
1.16-2ubuntu0.3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkadm5clnt-mit11"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkadm5srv-mit11"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkdb5-9"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4",
            "binary_name": "libkrb5support0"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-36222"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-37750"
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}

Ubuntu:20.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.17-6ubuntu4.3?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.17-6ubuntu4.3

Affected versions

1.*

1.17-6
1.17-6ubuntu3
1.17-6ubuntu4
1.17-6ubuntu4.1
1.17-6ubuntu4.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkadm5clnt-mit11"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkadm5srv-mit11"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkdb5-9"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.17-6ubuntu4.3",
            "binary_name": "libkrb5support0"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-36222"
        },
        {
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ],
            "id": "CVE-2021-37750"
        }
    ],
    "ecosystem": "Ubuntu:20.04:LTS"
}