Linux Kernel up to 3.x Performance Subsystem kernel/events/core.c access control

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Linux Kernel up to 3.x. The affected element is an unknown function of the file kernel/events/core.c of the component Performance Subsystem. Such manipulation leads to access control. This vulnerability is traded as CVE-2016-6787. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

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 databases at Tenable (97332) and SecurityFocus (BID 94679†). The entries VDB-90504, VDB-90540, VDB-94693 and VDB-95265 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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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 (🔍)
GCVE (CVE): GCVE-0-2016-6787
GCVE (VulDB): GCVE-100-94694

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: 🔍
Cache ID: 216:34E:103

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