Samba 4.2.9/4.3.6/4.4.0 SMB Signing 7pk security

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Samba 4.2.9/4.3.6/4.4.0 and classified as critical. The impacted element is an unknown function of the component SMB Signing. Executing a manipulation can lead to 7pk security. This vulnerability appears as CVE-2016-2114. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Samba 4.2.9/4.3.6/4.4.0 (File Transfer Software) and classified as critical. This vulnerability affects an unknown code of the component SMB Signing. The manipulation with an unknown input leads to a 7pk security vulnerability. The CWE definition for the vulnerability is CWE-254. As an impact it is known to affect integrity.

The weakness was presented 04/12/2016 by Stefan Metzmacher (ERNE) with SerNet (Website). The advisory is shared for download at samba.org. This vulnerability was named CVE-2016-2114 since 01/29/2016. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1211.

The vulnerability scanner Nessus provides a plugin with the ID 90519 (Fedora 23 : samba-4.3.8-0.fc23 (2016-be53260726) (Badlock)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196447 (Ubuntu Security Notification for Samba Vulnerabilities (USN-2950-1) (BADLOCK)).

Upgrading to version 4.4.1, 4.3.7 or 4.2.10 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (111941), Tenable (90519), SecurityFocus (BID 86011†) and Vulnerability Center (SBV-58156†). See VDB-82210, VDB-82404, VDB-82405 and VDB-82406 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.6

VulDB Base Score: 5.9
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: 7pk security
CWE: CWE-254
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 90519
Nessus Name: Fedora 23 : samba-4.3.8-0.fc23 (2016-be53260726) (Badlock)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 850058
OpenVAS Name: CentOS Update for openchange CESA-2016:0612 centos6
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Samba 4.4.1/4.3.7/4.2.10

Timelineinfo

01/29/2016 🔍
04/12/2016 +74 days 🔍
04/12/2016 +0 days 🔍
04/12/2016 +0 days 🔍
04/13/2016 +1 days 🔍
04/13/2016 +0 days 🔍
04/14/2016 +1 days 🔍
04/15/2016 +1 days 🔍
04/24/2016 +9 days 🔍
07/24/2022 +2282 days 🔍

Sourcesinfo

Product: samba.org

Advisory: FEDORA-2016-be53260726
Researcher: Stefan Metzmacher (ERNE)
Organization: SerNet
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-2114 (🔍)
GCVE (CVE): GCVE-0-2016-2114
GCVE (VulDB): GCVE-100-82408

OVAL: 🔍

X-Force: 111941 - Samba smb signing security bypass
SecurityFocus: 86011 - Samba CVE-2016-2114 Remote Security Bypass Vulnerability
SecurityTracker: 1035533
Vulnerability Center: 58156 - Samba Remote Man-in-the-Middle Attack due to not Enforcing Required smb Signing, Medium

See also: 🔍

Entryinfo

Created: 04/15/2016 12:00
Updated: 07/24/2022 19:39
Changes: 04/15/2016 12:00 (76), 02/04/2019 14:19 (15), 07/24/2022 19:23 (5), 07/24/2022 19:31 (1), 07/24/2022 19:39 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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