Samba up to 4.4.15/4.5.12/4.6.7 information disclosure

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.

A vulnerability, which was classified as critical, was found in Samba up to 4.4.15/4.5.12/4.6.7 (File Transfer Software). Affected is an unknown code. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. This is going to have an impact on confidentiality, integrity, and availability.

The bug was discovered 09/21/2017. The weakness was released 09/21/2017 by Yihan Lian and Zhibin Hu with Qihoo 360 GearTeam as confirmed advisory (Website). The advisory is shared for download at This vulnerability is traded as CVE-2017-12163 since 08/01/2017. It is possible to launch the attack remotely. A authentication is needed for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 103408 (RHEL 6 : samba4 (RHSA-2017:2791)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236504 (Red Hat Update for samba (RHSA-2017:2789)).

Upgrading to version 4.4.16, 4.5.14 or 4.6.8 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 100925), SecurityTracker (ID 1039401) and Tenable (103408). Entries connected to this vulnerability are available at 107074 and 107075.




CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.1
NVD Vector: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍


Class: Information disclosure
CWE: CWE-200
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 103408
Nessus Name: RHEL 6 : samba4 (RHSA-2017:2791)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3983-1 (samba - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
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Predictions: 🔍
Remediation: 🔍


Recommended: Upgrade
Status: 🔍

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

Upgrade: Samba 4.4.16/4.5.14/4.6.8


08/01/2017 🔍
09/20/2017 +50 days 🔍
09/21/2017 +1 days 🔍
09/21/2017 +0 days 🔍
09/21/2017 +0 days 🔍
09/21/2017 +0 days 🔍
09/22/2017 +1 days 🔍
09/25/2017 +3 days 🔍
07/26/2018 +303 days 🔍
01/14/2021 +903 days 🔍



Researcher: Yihan Lian/Zhibin Hu
Organization: Qihoo 360 GearTeam
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-12163 (🔍)

SecurityFocus: 100925 - Samba CVE-2017-12163 Arbitrary File Write Vulnerability
SecurityTracker: 1039401

See also: 🔍


Created: 09/25/2017 11:06 AM
Updated: 01/14/2021 11:48 AM
Changes: (1) advisory_person_name
Complete: 🔍


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