CVE-2019-14861

CVSS V2 Low 3.5 CVSS V3 Medium 5.3

Description

All Samba versions 4.x.x before 4.9.17, 4.10.x before 4.10.11 and 4.11.x before 4.11.3 have an issue, where the (poorly named) dnsserver RPC pipe provides administrative facilities to modify DNS records and zones. Samba, when acting as an AD DC, stores DNS records in LDAP. In AD, the default permissions on the DNS partition allow creation of new records by authenticated users. This is used for example to allow machines to self-register in DNS. If a DNS record was created that case-insensitively matched the name of the zone, the ldb_qsort() and dns_name_compare() routines could be confused into reading memory prior to the list of DNS entries when responding to DnssrvEnumRecords() or DnssrvEnumRecords2() and so following invalid memory as a pointer.

Overview

CVE ID
CVE-2019-14861

Assigner
secalert@redhat.com

Vulnerability Status
Analyzed

Published Version
2019-12-10T23:15:10

Last Modified Date
2023-01-30T19:56:46

Weakness Enumerations

CWE	URL
CWE-276	http://cwe.mitre.org/data/definitions/276.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:samba:samba::::::::	1	OR	4.0.0	4.9.17
cpe:2.3:a:samba:samba::::::::	1	OR	4.10.0	4.10.11
cpe:2.3:a:samba:samba::::::::	1	OR	4.11.0	4.11.3
cpe:2.3:o:fedoraproject:fedora:30:::::::*	1	OR
cpe:2.3:o:fedoraproject:fedora:31:::::::*	1	OR
cpe:2.3:o:canonical:ubuntu_linux:14.04::::esm:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:16.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:18.04::::lts:::	1	OR
cpe:2.3:o:canonical:ubuntu_linux:19.04:::::::*	1	OR
cpe:2.3:o:canonical:ubuntu_linux:19.10:::::::*	1	OR
cpe:2.3:o:opensuse:leap:15.1:::::::*	1	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:S/C:N/I:N/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
SINGLE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
3.5

Severity
LOW

Exploitability Score
6.8

Impact Score
2.9

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
HIGH

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
5.3

Base Severity
MEDIUM

Exploitability Score
1.6

Impact Score
3.6

References

Reference URL	Reference Tags
https://www.samba.org/samba/security/CVE-2019-14861.html	Vendor Advisory
https://security.netapp.com/advisory/ntap-20191210-0002/	Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14861	Issue Tracking Third Party Advisory
https://usn.ubuntu.com/4217-1/	Third Party Advisory
https://usn.ubuntu.com/4217-2/	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/	Third Party Advisory
https://www.synology.com/security/advisory/Synology_SA_19_40	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html	Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/	Third Party Advisory
https://security.gentoo.org/glsa/202003-52	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-14861
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14861

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:14:18				Added to TrackCVE
2022-12-04 07:38:13	2019-12-10T23:15Z	2019-12-10T23:15:10	CVE Published Date	updated
2022-12-04 07:38:13		2021-05-29T13:15:07	CVE Modified Date	updated
2022-12-04 07:38:13		Undergoing Analysis	Vulnerability Status	updated
2023-01-30 21:08:58		2023-01-30T19:56:46	CVE Modified Date	updated
2023-01-30 21:08:58	Undergoing Analysis	Analyzed	Vulnerability Status	updated