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.
6.0	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 3.x (Operating System) and classified as problematic. Affected by this issue is an unknown code block of the file kernel/events/core.c of the component Performance Subsystem. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

kernel/events/core.c in the performance subsystem in the Linux kernel before 4.0 mismanages locks during certain migrations, which allows local users to gain privileges via a crafted application, aka Android internal bug 31095224.

The bug was discovered 12/23/2016. The weakness was shared 12/28/2016 (Website). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2016-6787 since 08/11/2016. Local access is required to approach this attack. The requirement for exploitation is a simple authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 97332 (Debian DLA-833-1 : linux security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175973 (Debian Security Update for Linux (DSA 3791-1)).

Upgrading to version 4.0 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (97332). The entries 90504, 90540, 94693 and 95265 are related to this item.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 3.x

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.0
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 97332
Nessus Name: Debian DLA-833-1 : linux security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703791
OpenVAS Name: Debian Security Advisory DSA 3791-1 (linux - security update)
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: Kernel 4.0
Patch: git.kernel.org

Timelineinfo

08/11/2016 🔍
12/06/2016 +117 days 🔍
12/23/2016 +17 days 🔍
12/28/2016 +5 days 🔍
12/28/2016 +0 days 🔍
12/28/2016 +0 days 🔍
02/22/2017 +56 days 🔍
02/23/2017 +1 days 🔍
10/12/2022 +2057 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: f63a8daa5812afef4f06c962351687e1ff9ccb2b
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6787 (🔍)
OVAL: 🔍

SecurityFocus: 94679 - Google Android Multiple Privilege Escalation Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/28/2016 16:10
Updated: 10/12/2022 18:50
Changes: 12/28/2016 16:10 (79), 07/20/2019 08:42 (6), 10/12/2022 18:50 (4)
Complete: 🔍

Discussion

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