VDB-90535 · CVE-2016-3851 · BID 92251

Google Android on Nexus 5X LG Electronics Bootloader access control

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.
7.7	$5k-$25k	0.00

Summaryinfo

A vulnerability marked as critical has been reported in Google Android on Nexus 5X. Impacted is an unknown function of the component LG Electronics Bootloader. This manipulation causes access control. This vulnerability is registered as CVE-2016-3851. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Google Android on Nexus 5X (Smartphone Operating System) (the affected version is unknown) and classified as critical. Affected by this vulnerability is an unknown code of the component LG Electronics Bootloader. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The LG Electronics bootloader Android before 2016-08-05 on Nexus 5X devices allows attackers to gain privileges by leveraging access to a privileged process, aka internal bug 29189941.

The weakness was published 08/01/2016 as Android Security Bulletin - August 2016 as confirmed security bulletin (Website). It is possible to read the advisory at source.android.com. This vulnerability is known as CVE-2016-3851 since 03/30/2016. The exploitation appears to be easy. Attacking locally is a requirement. A single authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 03/20/2019). It is expected to see the exploit prices for this product increasing in the near future.The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92251†). Similar entries are available at VDB-90455, VDB-90456, VDB-90457 and VDB-90458. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Smartphone Operating System

Vendor

Google

Name

Android

License

free

Website

Vendor: https://www.google.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 7.9

VulDB Base Score: 8.1
VulDB Temp Score: 7.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

03/30/2016 🔍
08/01/2016 +124 days 🔍
08/01/2016 +0 days 🔍
08/01/2016 +0 days 🔍
08/05/2016 +4 days 🔍
08/06/2016 +1 days 🔍
03/20/2019 +956 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: Android Security Bulletin - August 2016
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-3851 (🔍)
GCVE (CVE): GCVE-0-2016-3851
GCVE (VulDB): GCVE-100-90535
SecurityFocus: 92251 - Google Nexus LG Electronics Bootloader CVE-2016-3851 Privilege Escalation Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20150917
See also: 🔍

Entryinfo

Created: 08/06/2016 14:02
Updated: 03/20/2019 15:42
Changes: 08/06/2016 14:02 (56), 03/20/2019 15:42 (13)
Complete: 🔍
Cache ID: 216::103