Linux Kernel 3.12/3.13/3.14/3.15 arch/x86/kvm/vmx.c handle_invept null pointer dereference

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

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel 3.12/3.13/3.14/3.15. This impacts the function handle_invept of the file arch/x86/kvm/vmx.c. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2017-8106. The attack needs to be performed locally. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel 3.12/3.13/3.14/3.15 (Operating System) and classified as problematic. This issue affects the function handle_invept of the file arch/x86/kvm/vmx.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

The handle_invept function in arch/x86/kvm/vmx.c in the Linux kernel 3.12 through 3.15 allows privileged KVM guest OS users to cause a denial of service (NULL pointer dereference and host OS crash) via a single-context INVEPT instruction with a NULL EPT pointer.

The bug was discovered 04/24/2017. The weakness was released 04/24/2017 (Website). It is possible to read the advisory at bugzilla.kernel.org. The identification of this vulnerability is CVE-2017-8106 since 04/24/2017. The exploitation is known to be easy. Attacking locally is a requirement. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 100320 (SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:1360-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169993 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2017:1360-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (100320). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 100320
Nessus Name: SUSE SLED12 / SLES12 Security Update : kernel (SUSE-SU-2017:1360-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

04/24/2017 🔍
04/24/2017 +0 days 🔍
04/24/2017 +0 days 🔍
04/24/2017 +0 days 🔍
04/25/2017 +1 days 🔍
05/19/2017 +24 days 🔍
05/22/2017 +3 days 🔍
11/30/2024 +2749 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: bugzilla.kernel.org
Status: Confirmed

CVE: CVE-2017-8106 (🔍)
GCVE (CVE): GCVE-0-2017-8106
GCVE (VulDB): GCVE-100-100571
OSVDB: - CVE-2017-8106 - Linux - Denial of Service Issue

Entryinfo

Created: 04/25/2017 09:04
Updated: 11/30/2024 14:04
Changes: 04/25/2017 09:04 (67), 09/20/2020 21:13 (4), 11/30/2024 14:04 (20)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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