Linux Kernel 3.10 ims-pcu.c ims_pcu_parse_cdc_data null pointer dereference

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5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel 3.10 and classified as problematic. Affected by this vulnerability is the function ims_pcu_parse_cdc_data of the file drivers/input/misc/ims-pcu.c. Such manipulation leads to null pointer dereference. This vulnerability is traded as CVE-2016-3689. An attack has to be approached locally. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 3.10 (Operating System) and classified as critical. Affected by this issue is the function ims_pcu_parse_cdc_data of the file drivers/input/misc/ims-pcu.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 confidentiality, integrity, and availability. CVE summarizes:

The ims_pcu_parse_cdc_data function in drivers/input/misc/ims-pcu.c in the Linux kernel before 4.5.1 allows physically proximate attackers to cause a denial of service (system crash) via a USB device without both a master and a slave interface.

The weakness was shared 03/30/2016 as confirmed git commit (GIT Repository). The advisory is available at git.kernel.org. This vulnerability is handled as CVE-2016-3689 since 03/30/2016. Local access is required to approach this attack. A simple authentication is needed for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 91091 (Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2970-1)), 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 196463 (Ubuntu Security Notification for Linux Vulnerabilities (USN-2965-1)).

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 1 days after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

if (!pcu->ctrl_intf)
return -EINVAL;

The vulnerability is also documented in the databases at X-Force (111865), Tenable (91091) and SecurityTracker (ID 1035441†). The entries VDB-81295, VDB-81364, VDB-81365 and VDB-81366 are related to this item. If you want to get best quality of vulnerability data, you may have to visit VulDB.

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CPE 2.3info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.7

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91091
Nessus Name: Ubuntu 14.04 LTS : linux-lts-vivid vulnerabilities (USN-2970-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 830125
OpenVAS Name: Ubuntu Update for linux-raspi2 USN-2965-3
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Patch: git.kernel.org

Timelineinfo

03/30/2016 🔍
03/30/2016 +0 days 🔍
03/31/2016 +1 days 🔍
03/31/2016 +0 days 🔍
03/31/2016 +0 days 🔍
05/02/2016 +32 days 🔍
05/12/2016 +9 days 🔍
07/11/2022 +2251 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2970-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-3689 (🔍)
GCVE (CVE): GCVE-0-2016-3689
GCVE (VulDB): GCVE-100-81554
X-Force: 111865 - Linux Kernel ims-pcu driver denial of servcie
SecurityTracker: 1035441

See also: 🔍

Entryinfo

Created: 03/31/2016 16:44
Updated: 07/11/2022 17:00
Changes: 03/31/2016 16:44 (72), 09/21/2018 08:45 (16), 07/11/2022 16:52 (3), 07/11/2022 17:00 (1)
Complete: 🔍
Cache ID: 216:AE3:103

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

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