VDB-108772 · CVE-2017-5123 · EDB-ID 43029

Linux Kernel 4.14.0-rc4 waitid privileges management

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.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Linux Kernel 4.14.0-rc4. It has been declared as critical. This issue affects the function waitid. Executing a manipulation can lead to privileges management. This vulnerability is tracked as CVE-2017-5123. The attack is restricted to local execution. Moreover, an exploit is present. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 4.14.0-rc4 (Operating System). It has been declared as critical. This vulnerability affects the function waitid. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability.

The bug was discovered 10/22/2017. The weakness was disclosed 10/22/2017 as EDB-ID 43029 as confirmed exploit (Exploit-DB). The advisory is shared for download at exploit-db.com. This vulnerability was named CVE-2017-5123 since 01/02/2017. The attack needs to be approached locally. Required for exploitation is a single authentication. Technical details and also a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1068.

A public exploit has been developed by @XeR_0x2A/@chaign_c in ANSI C and been published immediately after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as functional. The vulnerability scanner Nessus provides a plugin with the ID 104160 (Fedora 25 : kernel (2017-cafcdbdde5)), 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 276977 (Fedora Security Update for kernel (FEDORA-2017-c110ac0eb1)).

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

The vulnerability is also documented in the databases at Exploit-DB (43029) and Tenable (104160). Additional details are provided at exploit-db.com. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

4.14.0-rc4

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

Video

Youtube: Not available anymore

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 6.9

VulDB Base Score: 5.3
VulDB Temp Score: 4.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Functional
Author: @XeR_0x2A/@chaign_c
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 104160
Nessus Name: Fedora 25 : kernel (2017-cafcdbdde5)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-cafcdbdde5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Exploit Delay Time: 🔍

Patch: git.kernel.org

Timelineinfo

01/02/2017 🔍
10/22/2017 +293 days 🔍
10/22/2017 +0 days 🔍
10/22/2017 +0 days 🔍
10/22/2017 +0 days 🔍
10/25/2017 +3 days 🔍
10/26/2017 +1 days 🔍
10/29/2017 +3 days 🔍
12/27/2024 +2616 days 🔍