CVE-2018-16851

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-476

Affected software

No affected versions have been published.

Timeline

Published: Nov 28, 2018
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2018

CVE-2018-168524.4Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference. During the processing of an DNS zone in the CVE-2018-168535.9Samba from version 4.7.0 has a vulnerability that allows a user in a Samba AD domain to crash the KDC when Samba is built in the non-default CVE-2018-168548.8A flaw was found in moodle versions 3.5 to 3.5.2, 3.4 to 3.4.5, 3.3 to 3.3.8, 3.1 to 3.1.14 and earlier. The login form is not protected by CVE-2018-168557.5An issue has been found in PowerDNS Recursor before version 4.1.8 where a remote attacker sending a DNS query can trigger an out-of-bounds m CVE-2018-168567.5In a default Red Hat Openstack Platform Director installation, openstack-octavia before versions openstack-octavia 2.0.2-5 and openstack-oct CVE-2018-168575.9Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of pa CVE-2018-168589.8It was found that libreoffice before versions 6.0.7 and 6.1.3 was vulnerable to a directory traversal attack which could be used to execute CVE-2018-168594.4Execution of Ansible playbooks on Windows platforms with PowerShell ScriptBlock logging and Module logging enabled can allow for 'become' pa CVE-2018-16865.4IBM Maximo Asset Management 7.6 through 7.6.3 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary Java CVE-2018-168607.5A flaw was found in samba's Heimdal KDC implementation, versions 4.8.x up to, excluding 4.8.12, 4.9.x up to, excluding 4.9.8 and 4.10.x up t CVE-2018-168614.8A cross-site scripting (XSS) flaw was found in the foreman component of satellite. An attacker with privilege to create entries using the Ho CVE-2018-168625.5A security flaw was found in the Linux kernel in a way that the cleancache subsystem clears an inode after the final file truncation (remova