UBUNTU-CVE-2018-5709

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Source
https://ubuntu.com/security/CVE-2018-5709
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-5709.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-5709
Upstream
Published
2018-01-16T09:29:00Z
Modified
2025-10-24T04:46:51Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - negligible
Summary
[none]
Details

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->nkeydata" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.

References

Affected packages

Ubuntu:Pro:14.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.12+dfsg-2ubuntu5.4+esm7?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

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
1.12+dfsg-2ubuntu5.4+esm1
1.12+dfsg-2ubuntu5.4+esm2
1.12+dfsg-2ubuntu5.4+esm3
1.12+dfsg-2ubuntu5.4+esm4
1.12+dfsg-2ubuntu5.4+esm5
1.12+dfsg-2ubuntu5.4+esm6
1.12+dfsg-2ubuntu5.4+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkadm5clnt-mit9"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkadm5srv-mit8"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkadm5srv-mit9"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkdb5-7"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.12+dfsg-2ubuntu5.4+esm7",
            "binary_name": "libkrb5support0"
        }
    ]
}

Ubuntu:Pro:16.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.13.2+dfsg-5ubuntu2.2+esm7?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

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
1.13.2+dfsg-5ubuntu2.2+esm3
1.13.2+dfsg-5ubuntu2.2+esm4
1.13.2+dfsg-5ubuntu2.2+esm5
1.13.2+dfsg-5ubuntu2.2+esm6
1.13.2+dfsg-5ubuntu2.2+esm7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkadm5clnt-mit9"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkadm5srv-mit9"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkdb5-8"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.13.2+dfsg-5ubuntu2.2+esm7",
            "binary_name": "libkrb5support0"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.16-2ubuntu0.4+esm5?arch=source&distro=esm-infra/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.15.1-2
1.16-2
1.16-2build1
1.16-2ubuntu0.1
1.16-2ubuntu0.1+esm1
1.16-2ubuntu0.2
1.16-2ubuntu0.3
1.16-2ubuntu0.4
1.16-2ubuntu0.4+esm1
1.16-2ubuntu0.4+esm2
1.16-2ubuntu0.4+esm3
1.16-2ubuntu0.4+esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkadm5clnt-mit11"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkadm5srv-mit11"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkdb5-9"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.16-2ubuntu0.4+esm5",
            "binary_name": "libkrb5support0"
        }
    ]
}

Ubuntu:20.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.17-6ubuntu4.11?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.17-6
1.17-6ubuntu3
1.17-6ubuntu4
1.17-6ubuntu4.1
1.17-6ubuntu4.2
1.17-6ubuntu4.3
1.17-6ubuntu4.4
1.17-6ubuntu4.6
1.17-6ubuntu4.7
1.17-6ubuntu4.8
1.17-6ubuntu4.9
1.17-6ubuntu4.11

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkadm5clnt-mit11"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkadm5srv-mit11"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkdb5-9"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.17-6ubuntu4.11",
            "binary_name": "libkrb5support0"
        }
    ]
}

Ubuntu:22.04:LTS / krb5

Package

Name
krb5
Purl
pkg:deb/ubuntu/krb5@1.19.2-2ubuntu0.7?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.18.3-6
1.18.3-7
1.19.2-0ubuntu1
1.19.2-1
1.19.2-2
1.19.2-2ubuntu0.1
1.19.2-2ubuntu0.2
1.19.2-2ubuntu0.3
1.19.2-2ubuntu0.4
1.19.2-2ubuntu0.5
1.19.2-2ubuntu0.6
1.19.2-2ubuntu0.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-admin-server"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-gss-samples"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-k5tls"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-kdc"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-kdc-ldap"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-kpropd"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-locales"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-multidev"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-otp"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-pkinit"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "krb5-user"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libgssapi-krb5-2"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libgssrpc4"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libk5crypto3"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkadm5clnt-mit12"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkadm5srv-mit12"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkdb5-10"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkrad-dev"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkrad0"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkrb5-3"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkrb5-dev"
        },
        {
            "binary_version": "1.19.2-2ubuntu0.7",
            "binary_name": "libkrb5support0"
        }
    ]
}