Samba up to 4.3.12/4.4.7/4.5.2 Kerberos input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability was found in Samba up to 4.3.12/4.4.7/4.5.2 (File Transfer Software) and classified as critical. This issue affects an unknown functionality of the component Kerberos. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability.

The bug was discovered 12/19/2016. The weakness was presented 12/19/2016 by Simo Sorce (ERNE) with Red Hat as confirmed advisory (Website). The advisory is shared at samba.org. The public release was coordinated in cooperation with the project team. The identification of this vulnerability is CVE-2016-2125 since 01/29/2016. The attack may be initiated remotely. The successful exploitation needs a simple authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 96293 (openSUSE Security Update : samba (openSUSE-2017-11)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169460 (SUSE Enterprise Linux Security Update for samba (SUSE-SU-2016:3271-1)).

Upgrading to version 4.3.13, 4.4.8 or 4.5.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (96293). See 94612 and 94614 for similar entries.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.4
CNA Vector (Red Hat, Inc.): 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96293
Nessus Name: openSUSE Security Update : samba (openSUSE-2017-11)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for ctdb CESA-2017:1265 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Samba 4.3.13/4.4.8/4.5.3

Timelineinfo

01/29/2016 🔍
12/19/2016 +325 days 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/19/2016 +0 days 🔍
12/20/2016 +1 days 🔍
12/20/2016 +0 days 🔍
01/05/2017 +16 days 🔍
10/31/2018 +664 days 🔍
10/12/2022 +1442 days 🔍

Sourcesinfo

Product: samba.org

Advisory: RHSA-2017:1265
Researcher: Simo Sorce (ERNE)
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-2125 (🔍)
OVAL: 🔍

SecurityTracker: 1037494
SecurityFocus: 94988 - Samba CVE-2016-2125 User Impersonation Vulnerability

See also: 🔍

Entryinfo

Created: 12/20/2016 10:34
Updated: 10/12/2022 12:36
Changes: 12/20/2016 10:34 (82), 07/11/2019 16:47 (6), 10/12/2022 12:28 (4), 10/12/2022 12:36 (12)
Complete: 🔍

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