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Vulnerability Details : CVE-2018-16851

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.
Publish Date : 2018-11-28 Last Update Date : 2019-10-09
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- CVSS Scores & Vulnerability Types

CVSS Score
4.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication ???
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 476

- Products Affected By CVE-2018-16851

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 12.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
4 OS Canonical Ubuntu Linux 18.04 * * * Version Details Vulnerabilities
5 OS Canonical Ubuntu Linux 18.10 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
7 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
8 Application Samba Samba * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 5
Debian Debian Linux 2
Samba Samba 1

- References For CVE-2018-16851

http://www.securityfocus.com/bid/106027
BID 106027 Samba CVE-2018-16851 Remote Denial of Service Vulnerability Release Date:2018-11-27
https://lists.debian.org/debian-lts-announce/2018/12/msg00005.html
MLIST [debian-lts-announce] 20181215 [SECURITY] [DLA 1607-1] samba security update
https://security.netapp.com/advisory/ntap-20181127-0001/ CONFIRM
https://usn.ubuntu.com/3827-2/
UBUNTU USN-3827-2
https://usn.ubuntu.com/3827-1/
UBUNTU USN-3827-1
https://www.debian.org/security/2018/dsa-4345
DEBIAN DSA-4345
https://www.samba.org/samba/security/CVE-2018-16851.html CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16851 CONFIRM
https://security.gentoo.org/glsa/202003-52
GENTOO GLSA-202003-52

- Metasploit Modules Related To CVE-2018-16851

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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