Linux Kernel 4.0 tcp_collapse access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel 4.0. This issue affects the function tcp_collapse. Such manipulation leads to access control. This vulnerability is traded as CVE-2016-8645. An attack has to be approached locally. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel 4.0 (Operating System) and classified as problematic. Affected by this issue is the function tcp_collapse. The manipulation with an unknown input leads to a access control vulnerability. Using CWE to declare the problem leads to CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Impacted is availability.

The bug was discovered 11/10/2016. The weakness was shared 11/11/2016 by Marco Grassi (Website). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2016-8645 since 10/12/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. 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 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 95037 (Fedora 24 : kernel (2016-3548475bca)), 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 196659 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3162-1)).

Upgrading to version 4.9-rc1 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (95037), SecurityFocus (BID 94264†) and SecurityTracker (ID 1037285†). The entry VDB-93851 is 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: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 95037
Nessus Name: Fedora 24 : kernel (2016-3548475bca)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 860758
OpenVAS Name: Ubuntu Update for linux-lts-xenial USN-3161-2
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 4.9-rc1

Timelineinfo

10/12/2016 🔍
11/10/2016 +29 days 🔍
11/11/2016 +1 days 🔍
11/11/2016 +0 days 🔍
11/14/2016 +3 days 🔍
11/15/2016 +1 days 🔍
11/19/2016 +4 days 🔍
11/22/2016 +3 days 🔍
11/27/2016 +5 days 🔍
06/02/2019 +917 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Researcher: Marco Grassi
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-8645 (🔍)
GCVE (CVE): GCVE-0-2016-8645
GCVE (VulDB): GCVE-100-93614
SecurityFocus: 94264 - Linux Kernel CVE-2016-8645 Local Denial of Service Vulnerability
SecurityTracker: 1037285

See also: 🔍

Entryinfo

Created: 11/15/2016 07:50
Updated: 06/02/2019 16:09
Changes: 11/15/2016 07:50 (60), 06/02/2019 16:09 (20)
Complete: 🔍
Cache ID: 216:15C:103

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