VULNERABILITY INTELLIGENCE

CVE-2018-16851

CVSS score6.5 MEDIUM
EPSS probability3.25%
CISA KEVNot currently listed
Published2018-11-28
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • secalert@redhat.com: CWE-476
  • nvd@nist.gov: CWE-476

Primary references