UBUNTU-CVE-2018-20217

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Please try reporting it to the source first.

Source

https://ubuntu.com/security/CVE-2018-20217

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-20217.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-20217

Related

Published

2018-12-26T21:29:00Z

Modified

2024-11-20T12:23:24Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
5.3 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator

Summary

[none]

Details

A Reachable Assertion issue was discovered in the KDC in MIT Kerberos 5 (aka krb5) before 1.17. If an attacker can obtain a krbtgt ticket using an older encryption type (single-DES, triple-DES, or RC4), the attacker can crash the KDC by making an S4U2Self request.

References

Affected packages

Ubuntu:Pro:14.04:LTS / krb5

Package

Name: krb5
Purl: pkg:deb/ubuntu/krb5?arch=src?distro=trusty/esm

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.12+dfsg-2ubuntu5.4+esm1

Affected versions

1.*

1.10.1+dfsg-6.1ubuntu1

1.11.3+dfsg-3ubuntu2

1.12+dfsg-2ubuntu1

1.12+dfsg-2ubuntu2

1.12+dfsg-2ubuntu3

1.12+dfsg-2ubuntu4

1.12+dfsg-2ubuntu4.2

1.12+dfsg-2ubuntu5

1.12+dfsg-2ubuntu5.1

1.12+dfsg-2ubuntu5.2

1.12+dfsg-2ubuntu5.3

1.12+dfsg-2ubuntu5.4

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-admin-server-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-doc"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-gss-samples-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-kdc-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-kdc-ldap-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-otp-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-pkinit-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "krb5-user-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libgssapi-krb5-2-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libgssrpc4-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libk5crypto3-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkadm5clnt-mit9"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkadm5clnt-mit9-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkadm5srv-mit8"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkadm5srv-mit9"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkadm5srv-mit9-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkdb5-7"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkdb5-7-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrad0-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5-3-dbgsym"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5-dbg"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5support0"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm1",
            "binary_name": "libkrb5support0-dbgsym"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / krb5

Package

Name: krb5
Purl: pkg:deb/ubuntu/krb5?arch=src?distro=esm-infra/xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.13.2+dfsg-5ubuntu2.2+esm3

Affected versions

1.*

1.13.2+dfsg-2

1.13.2+dfsg-3

1.13.2+dfsg-4

1.13.2+dfsg-5

1.13.2+dfsg-5ubuntu1

1.13.2+dfsg-5ubuntu2

1.13.2+dfsg-5ubuntu2.1

1.13.2+dfsg-5ubuntu2.1+esm1

1.13.2+dfsg-5ubuntu2.2

Ecosystem specific

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-admin-server-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-doc"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-gss-samples-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-k5tls-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-kdc-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-kdc-ldap-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-multidev-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-otp-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-pkinit-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "krb5-user-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libgssapi-krb5-2-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libgssrpc4-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libk5crypto3-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkadm5clnt-mit9"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkadm5clnt-mit9-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkadm5srv-mit9"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkadm5srv-mit9-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkdb5-8"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkdb5-8-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrad-dev-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrad0-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5-3-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5-dbg"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5-dev-dbgsym"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5support0"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm3",
            "binary_name": "libkrb5support0-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / krb5

Package

Name: krb5
Purl: pkg:deb/ubuntu/krb5?arch=src?distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.16-2ubuntu0.3

Affected versions

1.*

1.15.1-2

1.16-2

1.16-2build1

1.16-2ubuntu0.1

1.16-2ubuntu0.2

Ecosystem specific

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

Ubuntu:20.04:LTS / krb5

Package

Name: krb5
Purl: pkg:deb/ubuntu/krb5?arch=src?distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.17-6ubuntu4

Affected versions

1.*

1.17-6

1.17-6ubuntu3

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-admin-server-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-doc"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-gss-samples-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-k5tls-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kdc-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kdc-ldap-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-kpropd-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-otp-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-pkinit-dbgsym"
        },
        {
            "binary_version": "1.17-6ubuntu4",
            "binary_name": "krb5-user"
        },
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}