CVE-2019-14870

CVSS V2 Medium 6.4 CVSS V3 Medium 5.4
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 S4U (MS-SFU) Kerberos delegation model includes a feature allowing for a subset of clients to be opted out of constrained delegation in any way, either S4U2Self or regular Kerberos authentication, by forcing all tickets for these clients to be non-forwardable. In AD this is implemented by a user attribute delegation_not_allowed (aka not-delegated), which translates to disallow-forwardable. However the Samba AD DC does not do that for S4U2Self and does set the forwardable flag even if the impersonated client has the not-delegated flag set.
Overview
  • CVE ID
  • CVE-2019-14870
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2019-12-10T23:15:10
  • Last Modified Date
  • 2023-02-16T14:15:14
Weakness Enumerations
CWE URL
CWE-285 http://cwe.mitre.org/data/definitions/285.html
CWE-287 http://cwe.mitre.org/data/definitions/287.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: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
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 6.4
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 2.5
References
Reference URL Reference Tags
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00038.html Mailing List Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14870 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00034.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PJH3ROOFYMOATD2UEPC47P5RPBDTY77E/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WNKA4YIPV7AZR7KK3GW6L3HKGHSGJZFE/ Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202003-52 Third Party Advisory
https://security.netapp.com/advisory/ntap-20191210-0002/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20230216-0008/
https://usn.ubuntu.com/4217-1/ Third Party Advisory
https://usn.ubuntu.com/4217-2/ Third Party Advisory
https://www.samba.org/samba/security/CVE-2019-14870.html Vendor Advisory
https://www.synology.com/security/advisory/Synology_SA_19_40 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2019-14870
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14870
History
Created Old Value New Value Data Type Notes
2022-05-10 16:14:17 Added to TrackCVE
2022-12-04 07:38:17 2019-12-10T23:15Z 2019-12-10T23:15:10 CVE Published Date updated
2022-12-04 07:38:17 2022-11-26T23:15:10 CVE Modified Date updated
2022-12-04 07:38:17 Undergoing Analysis Vulnerability Status updated
2022-12-04 07:38:21 References updated
2023-02-09 03:10:49 2023-02-09T01:39:50 CVE Modified Date updated
2023-02-09 03:10:49 Undergoing Analysis Analyzed Vulnerability Status updated
2023-02-09 03:10:49 Weakness Enumeration update
2023-02-16 15:08:54 2023-02-16T14:15:14 CVE Modified Date updated
2023-02-16 15:08:54 Analyzed Modified Vulnerability Status updated
2023-02-16 15:08:55 References updated