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Test ID:1.3.6.1.4.1.25623.1.0.108694
Category:Denial of Service
Title:Samba DoS Vulnerability (CVE-2019-14847)
Summary:Samba is prone to a denial of service vulnerability.
Description:Summary:
Samba is prone to a denial of service vulnerability.

Vulnerability Insight:
Since Samba 4.0.0 Samba has implemented, in the AD DC, the 'dirsync'
LDAP control specified in MS-ADTS '3.1.1.3.4.1.3 LDAP_SERVER_DIRSYNC_OID'.

However, when combined with the ranged results feature specified in MS-ADTS '3.1.1.3.1.3.3 Range Retrieval
of Attribute Values' a NULL pointer is can be de-referenced.

This is a Denial of Service only, no further escalation of privilege is associated with this issue.

Affected Software/OS:
Samba 4.0.0 until Samba 4.10.9.

Samba 4.11 is not affected as the issue was fixed as a result of Coverity static analysis, before the potential
for denial of service became apparent.

Solution:
Update to version 4.9.15, 4.10.10 or later.

CVSS Score:
4.0

CVSS Vector:
AV:N/AC:L/Au:S/C:N/I:N/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2019-14847
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XQ3IUACPZJXSC4OM6P2V4IC4QMZQZWPD/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OKPYHDFI7HRELVXBE5J4MTGSI35AKFBI/
https://www.samba.org/samba/security/CVE-2019-14847.html
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html
https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html
SuSE Security Announcement: openSUSE-SU-2019:2458 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00015.html
CopyrightCopyright (C) 2019 Greenbone Networks GmbH

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