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

CVSS Meta Temp Score
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CTI Interest Score
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4.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Linux Kernel up to 4.13.3. Affected by this issue is some unknown functionality of the file arch/x86/kvm/vmx.c of the component KVM Subsystem. The manipulation results in input validation. This vulnerability is known as CVE-2017-1000252. Attacking locally is a requirement. No exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

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 input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

The KVM subsystem in the Linux kernel through 4.13.3 allows guest OS users to cause a denial of service (assertion failure, and hypervisor hang or crash) via an out-of bounds guest_irq value, related to arch/x86/kvm/vmx.c and virt/kvm/eventfd.c.

The bug was discovered 09/07/2017. The weakness was published 09/26/2017 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 $0-$5k. 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 l. 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 Tenable (103365) and SecurityFocus (BID 101022†). Similar entries are available at VDB-106296 and VDB-106737. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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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

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

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 Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

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 🔍
12/30/2022 +1921 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2018:0676
Researcher: Jan H. Schönherr
Organization: Amazon
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-1000252 (🔍)
GCVE (CVE): GCVE-0-2017-1000252
GCVE (VulDB): GCVE-100-107130

OVAL: 🔍

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

See also: 🔍

Entryinfo

Created: 09/26/2017 15:11
Updated: 12/30/2022 09:32
Changes: 09/26/2017 15:11 (79), 11/19/2019 16:18 (6), 01/14/2021 13:14 (3), 12/30/2022 09:32 (3)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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