Linux Kernel up to 4.9.x/4.10.11 cxusb.c memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.9.x/4.10.11. It has been classified as critical. The affected element is an unknown function of the file drivers/media/usb/dvb-usb/cxusb.c. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2017-8063. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.9.x/4.10.11 (Operating System). This issue affects an unknown code block of the file drivers/media/usb/dvb-usb/cxusb.c. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

drivers/media/usb/dvb-usb/cxusb.c in the Linux kernel 4.9.x and 4.10.x before 4.10.12 interacts incorrectly with the CONFIG_VMAP_STACK option, which allows local users to cause a denial of service (system crash) or possibly have unspecified other impact by leveraging use of more than one virtual page for a DMA scatterlist.

The bug was discovered 04/16/2017. The weakness was shared 04/23/2017 (Website). The advisory is shared at kernel.org. The identification of this vulnerability is CVE-2017-8063 since 04/23/2017. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 7 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 100668 (Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3314-1)), 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 196809 (Ubuntu Security Notification for Linux, Linux-raspi2 Vulnerabilities (USN-3314-1)).

Upgrading to version 4.9.x 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 (100668) and SecurityFocus (BID 97974†). The entries VDB-100271, VDB-100470, VDB-100473 and VDB-100633 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 100668
Nessus Name: Ubuntu 17.04 : linux, linux-raspi2 vulnerabilities (USN-3314-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for linux USN-3314-1
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 4.9.x
Patch: git.kernel.org

Timelineinfo

04/16/2017 🔍
04/23/2017 +7 days 🔍
04/23/2017 +0 days 🔍
04/23/2017 +0 days 🔍
04/23/2017 +0 days 🔍
04/23/2017 +0 days 🔍
06/07/2017 +45 days 🔍
06/07/2017 +0 days 🔍
12/02/2022 +2004 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3314-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-8063 (🔍)
GCVE (CVE): GCVE-0-2017-8063
GCVE (VulDB): GCVE-100-100469
SecurityFocus: 97974 - Linux Kernel CVE-2017-8063 Local Denial of Service Vulnerability
OSVDB: - CVE-2017-8063 - Linux - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 04/24/2017 00:06
Updated: 12/02/2022 07:59
Changes: 04/24/2017 00:06 (85), 12/02/2022 07:54 (5), 12/02/2022 07:59 (1)
Complete: 🔍
Cache ID: 216::103

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