Linux Kernel up to 4.13.3 KVM Subsystem arch/x86/kvm/vmx.c input validation

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CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.13.3 (Operating System). Affected is some unknown functionality of the file arch/x86/kvm/vmx.c of the component KVM Subsystem. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-20. This is going to have an impact on availability.

The bug was discovered 09/07/2017. The weakness was published 09/26/2017 by Jan H. Schönherr with Amazon as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is traded as CVE-2017-1000252 since 09/26/2017. The exploitability is told to be easy. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 13 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 103365 (Debian DSA-3981-1 : linux - security update (BlueBorne) (Stack Clash)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 236735 (Red Hat Update for kernel (RHSA-2018:1130)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 101022) and Tenable (103365). Similar entries are available at 106296 and 106737.

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VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.2

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

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2infoedit

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VulDB Base Score: 🔍
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Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-20
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103365
Nessus Name: Debian DSA-3981-1 : linux - security update (BlueBorne) (Stack Clash)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53754
OpenVAS Name: Debian Security Advisory DSA 3981-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

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Countermeasuresinfoedit

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfoedit

09/07/2017 🔍
09/20/2017 +13 days 🔍
09/21/2017 +1 days 🔍
09/26/2017 +5 days 🔍
09/26/2017 +0 days 🔍
09/26/2017 +0 days 🔍
09/26/2017 +0 days 🔍
09/26/2017 +0 days 🔍
01/14/2021 +1206 days 🔍

Sourcesinfoedit

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

Advisory: git.kernel.org
Researcher: Jan H. Schönherr
Organization: Amazon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-1000252 (🔍)
OVAL: 🔍

SecurityFocus: 101022 - Linux Kernel CVE-2017-1000252 Multiple Local Denial of Service Vulnerabilities

See also: 🔍

Entryinfoedit

Created: 09/26/2017 03:11 PM
Updated: 01/14/2021 01:14 PM
Changes: (3) advisory_person_name exploit_price_0day vulnerability_cvss2_nvd_basescore
Complete: 🔍

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