CVE-2016-2113

samba: Server certificates not validated at client side

Severity Score

7.4

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Samba 4.x before 4.2.11, 4.3.x before 4.3.8, and 4.4.x before 4.4.2 does not verify X.509 certificates from TLS servers, which allows man-in-the-middle attackers to spoof LDAPS and HTTPS servers and obtain sensitive information via a crafted certificate.

Samba 4.x en versiones anteriores a 4.2.11, 4.3.x en versiones anteriores a 4.3.8 y 4.4.x en versiones anteriores a 4.4.2 no verifica certificados X.509 de servidores TLS, lo que permite a atacantes man-in-the-middle suplantar servidores LDAPS y HTTPS y obtener información sensible a través de un certificado manipulado.

It was found that Samba did not validate SSL/TLS certificates in certain connections. A man-in-the-middle attacker could use this flaw to spoof a Samba server using a specially crafted SSL/TLS certificate.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-01-29 CVE Reserved
2016-04-12 CVE Published
2023-10-05 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-295: Improper Certificate Validation
CWE-310: Cryptographic Issues

CAPEC

References (33)

URL	Tag	Source
http://badlock.org	X_refsource_misc
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html	X_refsource_confirm
http://www.securitytracker.com/id/1035533	Vdb Entry
https://bto.bluecoat.com/security-advisory/sa122	X_refsource_confirm
https://www.samba.org/samba/history/samba-4.2.10.html	X_refsource_confirm
https://www.samba.org/samba/latest_news.html#4.4.2	X_refsource_confirm

URL	Date	SRC

URL	Date	SRC
https://www.samba.org/samba/security/CVE-2016-2113.html	2016-12-31

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182185.html	2016-12-31
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182272.html	2016-12-31
http://lists.fedoraproject.org/pipermail/package-announce/2016-April/182288.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00020.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00021.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00022.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00023.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00024.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00042.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html	2016-12-31
http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html	2016-12-31
http://rhn.redhat.com/errata/RHSA-2016-0612.html	2016-12-31
http://rhn.redhat.com/errata/RHSA-2016-0614.html	2016-12-31
http://rhn.redhat.com/errata/RHSA-2016-0618.html	2016-12-31
http://rhn.redhat.com/errata/RHSA-2016-0620.html	2016-12-31
http://www.debian.org/security/2016/dsa-3548	2016-12-31
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.458012	2016-12-31
http://www.ubuntu.com/usn/USN-2950-1	2016-12-31
http://www.ubuntu.com/usn/USN-2950-2	2016-12-31
http://www.ubuntu.com/usn/USN-2950-3	2016-12-31
http://www.ubuntu.com/usn/USN-2950-4	2016-12-31
http://www.ubuntu.com/usn/USN-2950-5	2016-12-31
https://security.gentoo.org/glsa/201612-47	2016-12-31
https://access.redhat.com/security/cve/CVE-2016-2113	2016-04-12
https://bugzilla.redhat.com/show_bug.cgi?id=1311910	2016-04-12
https://access.redhat.com/articles/2243351	2016-04-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.0 Search vendor "Samba" for product "Samba" and version "4.0.0"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.1 Search vendor "Samba" for product "Samba" and version "4.0.1"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.2 Search vendor "Samba" for product "Samba" and version "4.0.2"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.3 Search vendor "Samba" for product "Samba" and version "4.0.3"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.4 Search vendor "Samba" for product "Samba" and version "4.0.4"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.5 Search vendor "Samba" for product "Samba" and version "4.0.5"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.6 Search vendor "Samba" for product "Samba" and version "4.0.6"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.7 Search vendor "Samba" for product "Samba" and version "4.0.7"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.8 Search vendor "Samba" for product "Samba" and version "4.0.8"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.9 Search vendor "Samba" for product "Samba" and version "4.0.9"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.10 Search vendor "Samba" for product "Samba" and version "4.0.10"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.11 Search vendor "Samba" for product "Samba" and version "4.0.11"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.12 Search vendor "Samba" for product "Samba" and version "4.0.12"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.13 Search vendor "Samba" for product "Samba" and version "4.0.13"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.14 Search vendor "Samba" for product "Samba" and version "4.0.14"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.15 Search vendor "Samba" for product "Samba" and version "4.0.15"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.16 Search vendor "Samba" for product "Samba" and version "4.0.16"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.17 Search vendor "Samba" for product "Samba" and version "4.0.17"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.18 Search vendor "Samba" for product "Samba" and version "4.0.18"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.19 Search vendor "Samba" for product "Samba" and version "4.0.19"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.20 Search vendor "Samba" for product "Samba" and version "4.0.20"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.21 Search vendor "Samba" for product "Samba" and version "4.0.21"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.22 Search vendor "Samba" for product "Samba" and version "4.0.22"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.23 Search vendor "Samba" for product "Samba" and version "4.0.23"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.24 Search vendor "Samba" for product "Samba" and version "4.0.24"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.25 Search vendor "Samba" for product "Samba" and version "4.0.25"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.0.26 Search vendor "Samba" for product "Samba" and version "4.0.26"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.0 Search vendor "Samba" for product "Samba" and version "4.1.0"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.1 Search vendor "Samba" for product "Samba" and version "4.1.1"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.2 Search vendor "Samba" for product "Samba" and version "4.1.2"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.3 Search vendor "Samba" for product "Samba" and version "4.1.3"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.4 Search vendor "Samba" for product "Samba" and version "4.1.4"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.5 Search vendor "Samba" for product "Samba" and version "4.1.5"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.6 Search vendor "Samba" for product "Samba" and version "4.1.6"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.7 Search vendor "Samba" for product "Samba" and version "4.1.7"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.8 Search vendor "Samba" for product "Samba" and version "4.1.8"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.9 Search vendor "Samba" for product "Samba" and version "4.1.9"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.10 Search vendor "Samba" for product "Samba" and version "4.1.10"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.11 Search vendor "Samba" for product "Samba" and version "4.1.11"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.12 Search vendor "Samba" for product "Samba" and version "4.1.12"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.13 Search vendor "Samba" for product "Samba" and version "4.1.13"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.14 Search vendor "Samba" for product "Samba" and version "4.1.14"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.15 Search vendor "Samba" for product "Samba" and version "4.1.15"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.16 Search vendor "Samba" for product "Samba" and version "4.1.16"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.17 Search vendor "Samba" for product "Samba" and version "4.1.17"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.18 Search vendor "Samba" for product "Samba" and version "4.1.18"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.19 Search vendor "Samba" for product "Samba" and version "4.1.19"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.20 Search vendor "Samba" for product "Samba" and version "4.1.20"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.21 Search vendor "Samba" for product "Samba" and version "4.1.21"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.22 Search vendor "Samba" for product "Samba" and version "4.1.22"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.1.23 Search vendor "Samba" for product "Samba" and version "4.1.23"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.0 Search vendor "Samba" for product "Samba" and version "4.2.0"		rc1		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.0 Search vendor "Samba" for product "Samba" and version "4.2.0"		rc2		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.0 Search vendor "Samba" for product "Samba" and version "4.2.0"		rc3		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.0 Search vendor "Samba" for product "Samba" and version "4.2.0"		rc4		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.1 Search vendor "Samba" for product "Samba" and version "4.2.1"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.2 Search vendor "Samba" for product "Samba" and version "4.2.2"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.3 Search vendor "Samba" for product "Samba" and version "4.2.3"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.4 Search vendor "Samba" for product "Samba" and version "4.2.4"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.5 Search vendor "Samba" for product "Samba" and version "4.2.5"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.6 Search vendor "Samba" for product "Samba" and version "4.2.6"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.7 Search vendor "Samba" for product "Samba" and version "4.2.7"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.8 Search vendor "Samba" for product "Samba" and version "4.2.8"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.2.9 Search vendor "Samba" for product "Samba" and version "4.2.9"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.0 Search vendor "Samba" for product "Samba" and version "4.3.0"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.1 Search vendor "Samba" for product "Samba" and version "4.3.1"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.2 Search vendor "Samba" for product "Samba" and version "4.3.2"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.3 Search vendor "Samba" for product "Samba" and version "4.3.3"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.4 Search vendor "Samba" for product "Samba" and version "4.3.4"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.5 Search vendor "Samba" for product "Samba" and version "4.3.5"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.3.6 Search vendor "Samba" for product "Samba" and version "4.3.6"		-		Affected
Samba Search vendor "Samba"		Samba Search vendor "Samba" for product "Samba"				4.4.0 Search vendor "Samba" for product "Samba" and version "4.4.0"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				15.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "15.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04"		lts		Affected