Linux Kernel up to 4.3.4 Hub-Interface Data Structure drivers/usb/core/hub.c hub_activate null pointer dereference

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
8.1$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.3.4. The affected element is the function hub_activate of the file drivers/usb/core/hub.c of the component Hub-Interface Data Structure Handler. Such manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2015-8816. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Linux Kernel up to 4.3.4 (Operating System). Affected by this issue is the function hub_activate of the file drivers/usb/core/hub.c of the component Hub-Interface Data Structure Handler. 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 hub_activate function in drivers/usb/core/hub.c in the Linux kernel before 4.3.5 does not properly maintain a hub-interface data structure, which allows physically proximate attackers to cause a denial of service (invalid memory access and system crash) or possibly have unspecified other impact by unplugging a USB hub device.

The weakness was released 04/27/2016 by Alex (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2015-8816 since 02/22/2016. The exploitation is known to be easy. Local access is required to approach this attack. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 89122 (Debian DSA-3503-1 : linux - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168985 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2016:1764-1)).

Upgrading to version 4.3.5 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 (89122) and SecurityFocus (BID 83363†). Entries connected to this vulnerability are available at VDB-82955, VDB-82956, VDB-82957 and VDB-82958. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 89122
Nessus Name: Debian DSA-3503-1 : linux - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703503
OpenVAS Name: Debian Security Advisory DSA 3503-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 4.3.5
Patch: git.kernel.org

Timelineinfo

02/22/2016 🔍
02/22/2016 +0 days 🔍
03/02/2016 +9 days 🔍
03/03/2016 +1 days 🔍
04/27/2016 +54 days 🔍
04/27/2016 +0 days 🔍
04/28/2016 +1 days 🔍
07/26/2022 +2280 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: e50293ef9775c5f1cf3fcc093037dd6a8c5684ea
Researcher: Alex
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8816 (🔍)
GCVE (CVE): GCVE-0-2015-8816
GCVE (VulDB): GCVE-100-82946

OVAL: 🔍

SecurityFocus: 83363 - Linux Kernel 'usb/core/hub.c' NULL Pointer Dereference Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 04/28/2016 10:22
Updated: 07/26/2022 20:55
Changes: 04/28/2016 10:22 (63), 10/28/2018 08:25 (20), 07/26/2022 20:55 (4)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!