UBUNTU-CVE-2018-16851

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Source

https://ubuntu.com/security/notices/UBUNTU-CVE-2018-16851

Import Source

https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-16851.json

JSON Data

https://api.osv.dev/v1/vulns/UBUNTU-CVE-2018-16851

Related

Published

2018-11-27T00:00:00Z

Modified

2018-11-27T00:00:00Z

Severity

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

Summary

[none]

Details

Samba from version 4.0.0 and before versions 4.7.12, 4.8.7, 4.9.3 is vulnerable to a denial of service. During the processing of an LDAP search before Samba's AD DC returns the LDAP entries to the client, the entries are cached in a single memory object with a maximum size of 256MB. When this size is reached, the Samba process providing the LDAP service will follow the NULL pointer, terminating the process. There is no further vulnerability associated with this issue, merely a denial of service.

References

Affected packages

Ubuntu:14.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.14.04.19?arch=src?distro=trusty

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.3.11+dfsg-0ubuntu0.14.04.19

Affected versions

2:3.*

2:3.6.18-1ubuntu3

2:4.*

2:4.0.10+dfsg-4ubuntu2

2:4.0.13+dfsg-1ubuntu1

2:4.1.3+dfsg-2ubuntu2

2:4.1.3+dfsg-2ubuntu3

2:4.1.3+dfsg-2ubuntu4

2:4.1.3+dfsg-2ubuntu5

2:4.1.6+dfsg-1ubuntu1

2:4.1.6+dfsg-1ubuntu2

2:4.1.6+dfsg-1ubuntu2.14.04.1

2:4.1.6+dfsg-1ubuntu2.14.04.2

2:4.1.6+dfsg-1ubuntu2.14.04.3

2:4.1.6+dfsg-1ubuntu2.14.04.4

2:4.1.6+dfsg-1ubuntu2.14.04.5

2:4.1.6+dfsg-1ubuntu2.14.04.7

2:4.1.6+dfsg-1ubuntu2.14.04.8

2:4.1.6+dfsg-1ubuntu2.14.04.9

2:4.1.6+dfsg-1ubuntu2.14.04.11

2:4.1.6+dfsg-1ubuntu2.14.04.12

2:4.1.6+dfsg-1ubuntu2.14.04.13

2:4.3.8+dfsg-0ubuntu0.14.04.2

2:4.3.9+dfsg-0ubuntu0.14.04.1

2:4.3.9+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.1

2:4.3.11+dfsg-0ubuntu0.14.04.2

2:4.3.11+dfsg-0ubuntu0.14.04.3

2:4.3.11+dfsg-0ubuntu0.14.04.4

2:4.3.11+dfsg-0ubuntu0.14.04.6

2:4.3.11+dfsg-0ubuntu0.14.04.7

2:4.3.11+dfsg-0ubuntu0.14.04.8

2:4.3.11+dfsg-0ubuntu0.14.04.9

2:4.3.11+dfsg-0ubuntu0.14.04.10

2:4.3.11+dfsg-0ubuntu0.14.04.11

2:4.3.11+dfsg-0ubuntu0.14.04.12

2:4.3.11+dfsg-0ubuntu0.14.04.13

2:4.3.11+dfsg-0ubuntu0.14.04.14

2:4.3.11+dfsg-0ubuntu0.14.04.16

2:4.3.11+dfsg-0ubuntu0.14.04.17

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-libs": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "registry-tools": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbsharemodes0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-doc": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbsharemodes0": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "python-samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbsharemodes-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbsharemodes-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "python-samba": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libpam-smbpass-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-common": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "smbclient": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "samba-dev": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.14.04.19",
            "libpam-smbpass": "2:4.3.11+dfsg-0ubuntu0.14.04.19"
        }
    ]
}

Ubuntu:16.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.3.11+dfsg-0ubuntu0.16.04.18?arch=src?distro=xenial

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.3.11+dfsg-0ubuntu0.16.04.18

Affected versions

2:4.*

2:4.1.17+dfsg-4ubuntu2

2:4.1.20+dfsg-1ubuntu1

2:4.1.20+dfsg-1ubuntu2

2:4.1.20+dfsg-1ubuntu3

2:4.1.20+dfsg-1ubuntu5

2:4.3.3+dfsg-1ubuntu1

2:4.3.3+dfsg-1ubuntu2

2:4.3.3+dfsg-1ubuntu3

2:4.3.6+dfsg-1ubuntu1

2:4.3.8+dfsg-0ubuntu1

2:4.3.9+dfsg-0ubuntu0.16.04.1

2:4.3.9+dfsg-0ubuntu0.16.04.2

2:4.3.9+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.1

2:4.3.11+dfsg-0ubuntu0.16.04.3

2:4.3.11+dfsg-0ubuntu0.16.04.5

2:4.3.11+dfsg-0ubuntu0.16.04.6

2:4.3.11+dfsg-0ubuntu0.16.04.7

2:4.3.11+dfsg-0ubuntu0.16.04.8

2:4.3.11+dfsg-0ubuntu0.16.04.9

2:4.3.11+dfsg-0ubuntu0.16.04.10

2:4.3.11+dfsg-0ubuntu0.16.04.11

2:4.3.11+dfsg-0ubuntu0.16.04.12

2:4.3.11+dfsg-0ubuntu0.16.04.13

2:4.3.11+dfsg-0ubuntu0.16.04.15

2:4.3.11+dfsg-0ubuntu0.16.04.16

2:4.3.11+dfsg-0ubuntu0.16.04.17

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "libwbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-libs": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "registry-tools": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-common-bin": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libwbclient0-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dsdb-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libpam-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libnss-winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-vfs-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-common-bin-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-testsuite": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "smbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libsmbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libsmbclient-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libwbclient0": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libparse-pidl-perl-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dsdb-modules": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "registry-tools-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-vfs-modules-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "python-samba": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "ctdb": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libsmbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libnss-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libsmbclient-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-libs-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dbg": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-testsuite-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-common": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "winbind-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libpam-winbind": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "smbclient": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libwbclient-dev-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "samba-dev": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "libparse-pidl-perl": "2:4.3.11+dfsg-0ubuntu0.16.04.18",
            "ctdb-dbgsym": "2:4.3.11+dfsg-0ubuntu0.16.04.18"
        }
    ]
}

Ubuntu:18.04:LTS / samba

Package

Name: samba
Purl: pkg:deb/ubuntu/samba@2:4.7.6+dfsg~ubuntu-0ubuntu2.5?arch=src?distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2:4.7.6+dfsg~ubuntu-0ubuntu2.5

Affected versions

2:4.*

2:4.6.7+dfsg-1ubuntu3

2:4.7.1+dfsg-1ubuntu1

2:4.7.3+dfsg-1ubuntu1

2:4.7.4+dfsg-1ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu1

2:4.7.6+dfsg~ubuntu-0ubuntu2

2:4.7.6+dfsg~ubuntu-0ubuntu2.2

2:4.7.6+dfsg~ubuntu-0ubuntu2.4

Ecosystem specific

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "libwbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-libs": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "registry-tools": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-common-bin": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libwbclient0-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-dsdb-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libpam-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libnss-winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-vfs-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "python-samba-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-common-bin-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-testsuite": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "smbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libsmbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libwbclient0": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libsmbclient-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "python-samba": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-dsdb-modules": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "registry-tools-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-vfs-modules-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "ctdb": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libnss-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libsmbclient-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-libs-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "winbind-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-testsuite-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-common": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libpam-winbind": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "smbclient": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "samba-dev": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "libparse-pidl-perl": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5",
            "ctdb-dbgsym": "2:4.7.6+dfsg~ubuntu-0ubuntu2.5"
        }
    ]
}