Linux Kernel up to 4.9 BP/OF Exception arch/x86/kvm/vmx.c 7pk error

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

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.9. This affects an unknown function of the file arch/x86/kvm/vmx.c of the component BP/OF Exception Handler. Executing a manipulation can lead to 7pk error. This vulnerability is handled as CVE-2016-9588. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.9 (Operating System). It has been declared as problematic. This vulnerability affects an unknown function of the file arch/x86/kvm/vmx.c of the component BP/OF Exception Handler. The manipulation with an unknown input leads to a 7pk error vulnerability. The CWE definition for the vulnerability is CWE-388. As an impact it is known to affect availability. CVE summarizes:

arch/x86/kvm/vmx.c in the Linux kernel through 4.9 mismanages the #BP and #OF exceptions, which allows guest OS users to cause a denial of service (guest OS crash) by declining to handle an exception thrown by an L2 guest.

The bug was discovered 12/19/2016. The weakness was released 12/28/2016 by Prasad J Pandit with Red Hat (Website). The advisory is shared for download at git.kernel.org. This vulnerability was named CVE-2016-9588 since 11/23/2016. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 96107 (Fedora 24 : kernel (2016-2b1f91e9bd)), 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 197307 (Ubuntu Security Notification for Linux Vulnerabilities (USN-3822-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96107) and SecurityFocus (BID 94933†). Entries connected to this vulnerability are available at VDB-109194 and VDB-126497. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 7pk error
CWE: CWE-388
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: 96107
Nessus Name: Fedora 24 : kernel (2016-2b1f91e9bd)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 864217
OpenVAS Name: Fedora Update for kernel FEDORA-2016-dd895763ac
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

11/23/2016 🔍
12/15/2016 +22 days 🔍
12/19/2016 +4 days 🔍
12/23/2016 +4 days 🔍
12/27/2016 +4 days 🔍
12/28/2016 +1 days 🔍
12/28/2016 +0 days 🔍
12/28/2016 +0 days 🔍
10/12/2022 +2114 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2016-2b1f91e9bd
Researcher: Prasad J Pandit
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-9588 (🔍)
GCVE (CVE): GCVE-0-2016-9588
GCVE (VulDB): GCVE-100-94696

OVAL: 🔍

SecurityFocus: 94933 - Linux Kernel 'arch/x86/kvm/vmx.c' Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 12/28/2016 16:10
Updated: 10/12/2022 19:19
Changes: 12/28/2016 16:10 (70), 07/20/2019 09:11 (14), 10/12/2022 19:12 (5), 10/12/2022 19:19 (1)
Complete: 🔍
Cache ID: 216::103

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