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.
5.3	$0-$5k	0.00

A vulnerability was found in Linux Kernel up to 4.14.10 (Operating System). It has been rated as critical. This issue affects the function get_net_ns_by_id of the file net/core/net_namespace.c. The manipulation with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability.

The bug was discovered 12/20/2017. The weakness was published 01/09/2018 by Paul (Website). The advisory is shared at git.kernel.org. The identification of this vulnerability is CVE-2017-15129 since 10/08/2017. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 20 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 106052 (Virtuozzo 7 : readykernel-patch (VZA-2018-004)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Virtuozzo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236708 (Red Hat Update for kernel-alt (RHSA-2018:0654)).

Upgrading to version 4.14.11 eliminates this vulnerability. A possible mitigation has been published 3 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (106052). Similar entries are available at 104316, 107862, 108798 and 110307.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 4.14.0
• 4.14.1
• 4.14.2
• 4.14.3
• 4.14.4
• 4.14.5
• 4.14.6
• 4.14.7
• 4.14.8
• 4.14.9
• 4.14.10

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Use after free
CWE: CWE-416 / CWE-119
ATT&CK: Unknown

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: 106052
Nessus Name: Virtuozzo 7 : readykernel-patch (VZA-2018-004)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 54529
OpenVAS Name: SuSE Update for Linux Kernel openSUSE-SU-2018:0408-1 (Linux Kernel)
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 4.14.11
Patch: git.kernel.org

Timelineinfo

10/08/2017 🔍
10/09/2017 +1 days 🔍
12/20/2017 +72 days 🔍
01/09/2018 +20 days 🔍
01/09/2018 +0 days 🔍
01/10/2018 +1 days 🔍
01/12/2018 +2 days 🔍
01/16/2018 +4 days 🔍
01/20/2023 +1830 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:0654
Researcher: Michael Ellerman/Gustavo Romero/Breno Leitao/Paul Mackerras/Cyril Bur. (Paul)
Status: Confirmed

CVE: CVE-2017-15129 (🔍)
SecurityFocus: 101264 - Linux Kernel CVE-2017-1000255 Local Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 01/10/2018 02:13 PM
Updated: 01/20/2023 01:23 PM
Changes: 01/10/2018 02:13 PM (79), 12/20/2019 07:18 PM (5), 01/29/2021 11:06 AM (2), 01/20/2023 01:23 PM (4)
Complete: 🔍

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