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.
4.3	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 4.5.0. This impacts an unknown function of the file fs/xfs/xfs_attr_list.c of the component XFS File System. The manipulation leads to resource consumption. This vulnerability is uniquely identified as CVE-2016-9685. Local access is required to approach this attack. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.5.0 (Operating System). It has been rated as problematic. This issue affects an unknown functionality of the file fs/xfs/xfs_attr_list.c of the component XFS File System. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

Multiple memory leaks in error paths in fs/xfs/xfs_attr_list.c in the Linux kernel before 4.5.1 allow local users to cause a denial of service (memory consumption) via crafted XFS filesystem operations.

The bug was discovered 12/28/2016. The weakness was disclosed 12/28/2016 (Website). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2016-9685 since 11/30/2016. An attack has to be approached locally. The successful exploitation needs a simple authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 102734 (CentOS 7 : kernel (CESA-2017:1842) (Stack Clash)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196683 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3187-1)).

Upgrading to version 4.5.1 eliminates this vulnerability. A possible mitigation has been published 9 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102734) and SecurityFocus (BID 94593†). The entry VDB-93841 is pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5.0

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
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: 102734
Nessus Name: CentOS 7 : kernel (CESA-2017:1842) (Stack Clash)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for kernel RHSA-2017:1842-01
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 4.5.1
Patch: git.kernel.org

Timelineinfo

11/30/2016 🔍
11/30/2016 +0 days 🔍
12/28/2016 +28 days 🔍
12/28/2016 +0 days 🔍
12/28/2016 +0 days 🔍
12/28/2016 +0 days 🔍
08/23/2017 +238 days 🔍
08/25/2017 +2 days 🔍
10/12/2022 +1874 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2017:1842
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9685 (🔍)
GCVE (CVE): GCVE-0-2016-9685
GCVE (VulDB): GCVE-100-94697
SecurityFocus: 94593 - Linux Kernel CVE-2016-9685 Multiple Local Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/28/2016 16:10
Updated: 10/12/2022 19:26
Changes: 12/28/2016 16:10 (77), 07/20/2019 09:16 (6), 10/12/2022 19:26 (4)
Complete: 🔍
Cache ID: 216:32C:103

Discussion

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