Linux Kernel up to 4.3 USB Device aiptek.c aiptek_probe null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.4$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Linux Kernel up to 4.3. Impacted is the function aiptek_probe of the file drivers/input/tablet/aiptek.c of the component USB Device Handler. This manipulation causes null pointer dereference. This vulnerability is registered as CVE-2015-7515. It is feasible to perform the attack on the physical device. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Linux Kernel up to 4.3 (Operating System). Affected by this vulnerability is the function aiptek_probe of the file drivers/input/tablet/aiptek.c of the component USB Device Handler. 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. The summary by CVE is:

The aiptek_probe function in drivers/input/tablet/aiptek.c in the Linux kernel before 4.4 allows physically proximate attackers to cause a denial of service (NULL pointer dereference and system crash) via a crafted USB device that lacks endpoints.

The weakness was published 04/27/2016 by Ralf Spenneberg with RCE Security (Website). The advisory is shared at security-tracker.debian.org. This vulnerability is known as CVE-2015-7515 since 09/29/2015. The exploitation appears to be easy. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

A public exploit has been developed by OpenSource Security and been published even before and not after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 89366 (Fedora 23 : kernel-4.2.7-300.fc23 (2015-ac9a19888e)), 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 168771 (SUSE Enterprise Linux Security update for the Linux Kernel (SUSE-SU-2016:1203-1)).

Upgrading to version 4.4 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 Exploit-DB (39544), Tenable (89366) and SecurityFocus (BID 84288†). Similar entries are available at VDB-8569, VDB-78541, VDB-79223 and VDB-79228. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.4

VulDB Base Score: 4.6
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
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: Yes
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: OpenSource Security
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 89366
Nessus Name: Fedora 23 : kernel-4.2.7-300.fc23 (2015-ac9a19888e)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703242
OpenVAS Name: Ubuntu Update for linux-ti-omap4 USN-2967-2
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.4
Patch: git.kernel.org

Timelineinfo

09/29/2015 🔍
12/15/2015 +78 days 🔍
03/03/2016 +79 days 🔍
03/08/2016 +5 days 🔍
03/08/2016 +0 days 🔍
03/08/2016 +0 days 🔍
04/27/2016 +49 days 🔍
04/27/2016 +0 days 🔍
04/28/2016 +1 days 🔍
11/04/2024 +3112 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2015-ac9a19888e
Researcher: Ralf Spenneberg
Organization: RCE Security
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-7515 (🔍)
GCVE (CVE): GCVE-0-2015-7515
GCVE (VulDB): GCVE-100-82945

OVAL: 🔍

SecurityFocus: 84288 - Linux Kernel CVE-2015-7515 Local Denial of Service Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 04/28/2016 10:22
Updated: 11/04/2024 23:11
Changes: 04/28/2016 10:22 (64), 10/28/2018 08:25 (27), 07/26/2022 20:40 (4), 07/26/2022 20:47 (1), 11/04/2024 23:11 (14)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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