Linux Kernel up to 4.13.10 powerpc.c kvm_vm_ioctl_check_extension null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.13.10 and classified as problematic. This impacts the function kvm_vm_ioctl_check_extension of the file arch/powerpc/kvm/powerpc.c. Executing a manipulation can lead to null pointer dereference. This vulnerability is tracked as CVE-2017-15306. The attack is restricted to local execution. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.13.10 (Operating System). This vulnerability affects the function kvm_vm_ioctl_check_extension of the file arch/powerpc/kvm/powerpc.c. The manipulation with an unknown input leads to a null pointer dereference vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

The kvm_vm_ioctl_check_extension function in arch/powerpc/kvm/powerpc.c in the Linux kernel before 4.13.11 allows local users to cause a denial of service (NULL pointer dereference and system crash) via a KVM_CHECK_EXTENSION KVM_CAP_PPC_HTM ioctl call to /dev/kvm.

The bug was discovered 10/14/2017. The weakness was disclosed 11/06/2017 (Website). The advisory is available at git.kernel.org. This vulnerability was named CVE-2017-15306 since 10/14/2017. Local access is required to approach this attack. A single authentication is needed for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 23 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105100 (Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3507-1) (Dirty COW)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196997 (Ubuntu Security Notification for Linux, Linux-raspi2 Vulnerabilities (USN-3507-1)).

Upgrading to version 4.13.11 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (105100) and SecurityFocus (BID 101693†). The entries VDB-109188 and VDB-110104 are pretty similar. 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: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
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: 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: 105100
Nessus Name: Ubuntu 17.10 : linux, linux-raspi2 vulnerabilities (USN-3507-1) (Dirty COW)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841439
OpenVAS Name: Ubuntu Update for linux USN-3507-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.13.11
Patch: git.kernel.org

Timelineinfo

10/14/2017 🔍
10/14/2017 +0 days 🔍
11/06/2017 +23 days 🔍
11/06/2017 +0 days 🔍
11/06/2017 +0 days 🔍
11/07/2017 +1 days 🔍
12/07/2017 +30 days 🔍
12/08/2017 +1 days 🔍
01/06/2023 +1855 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3507-1
Status: Not defined

CVE: CVE-2017-15306 (🔍)
GCVE (CVE): GCVE-0-2017-15306
GCVE (VulDB): GCVE-100-109162
SecurityFocus: 101693 - Linux Kernel 'arch/powerpc/kvm/powerpc.c' Local Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 11/07/2017 08:00
Updated: 01/06/2023 14:29
Changes: 11/07/2017 08:00 (79), 12/04/2019 17:09 (4), 01/06/2023 14:27 (5), 01/06/2023 14:29 (1)
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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