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.
7.6	$0-$5k	0.00

A vulnerability classified as critical has been found in Linux Kernel up to 4.10.10 (Operating System). This affects an unknown code block of the file /dev/mem of the component mm Subsystem. The manipulation with an unknown input leads to a access control vulnerability (Kernel Memory). CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The mm subsystem in the Linux kernel through 4.10.10 does not properly enforce the CONFIG_STRICT_DEVMEM protection mechanism, which allows local users to read or write to kernel memory locations in the first megabyte (and bypass slab-allocation access restrictions) via an application that opens the /dev/mem file, related to arch/x86/mm/init.c and drivers/char/mem.c.

The bug was discovered 04/16/2017. The weakness was shared 04/17/2017 (Website). The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2017-7889 since 04/16/2017. An attack has to be approached locally. The requirement for exploitation is a authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 99719 (Fedora 25 : kernel (2017-7462231059)), 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 276605 (Fedora Security Update for kernel (FEDORA-2017-7462231059)).

Upgrading 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 (99719) and SecurityFocus (BID 97690†). The entry VDB-99938 is related to this item.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.10.0
• 4.10.1
• 4.10.2
• 4.10.3
• 4.10.4
• 4.10.5
• 4.10.6
• 4.10.7
• 4.10.8
• 4.10.9
• 4.10.10

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: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
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

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

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: 99719
Nessus Name: Fedora 25 : kernel (2017-7462231059)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103075
OpenVAS Name: Dolibarr ERP & CRM <= 4.0.4 Multiple Vulnerabilities
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: 🔍

Patch: git.kernel.org

Timelineinfo

04/16/2017 🔍
04/16/2017 +0 days 🔍
04/16/2017 +0 days 🔍
04/17/2017 +1 days 🔍
04/17/2017 +0 days 🔍
04/17/2017 +0 days 🔍
04/27/2017 +10 days 🔍
04/28/2017 +1 days 🔍
11/29/2022 +2041 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-7462231059
Status: Not defined

CVE: CVE-2017-7889 (🔍)
OVAL: 🔍

SecurityFocus: 97690 - Linux Kernel CVE-2017-7889 Multiple Local Security Bypass Vulnerabilities
OSVDB: - CVE-2017-7889 - Linux - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 04/17/2017 11:36 AM
Updated: 11/29/2022 02:46 PM
Changes: 04/17/2017 11:36 AM (85), 11/29/2022 02:41 PM (5), 11/29/2022 02:42 PM (1), 11/29/2022 02:46 PM (1)
Complete: 🔍
Cache ID: 18:06D:40

Discussion

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