Huawei P9/P9 Lite Factory Reset Protection improper authorization

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.
5.6$0-$5k0.00

A vulnerability has been found in Huawei P9 and P9 Lite (Smartphone Operating System) (version unknown) and classified as critical. Affected by this vulnerability is an unknown function of the component Factory Reset Protection. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Huawei P9 phones with software EVA-AL10C00,EVA-CL10C00,EVA-DL10C00,EVA-TL10C00 and P9 Lite phones with software VNS-L21C185 allow attackers to bypass the factory reset protection (FRP) to enter some functional modules without authorization and perform operations to update the Google account.

The bug was discovered 12/07/2016. The weakness was released 04/02/2017 (Website). It is possible to read the advisory at huawei.com. This vulnerability is known as CVE-2016-8776 since 10/18/2016. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 116 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 94836†).

Productinfo

Type

Vendor

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 6.8
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/18/2016 🔍
12/07/2016 +50 days 🔍
12/07/2016 +0 days 🔍
04/02/2017 +116 days 🔍
04/02/2017 +0 days 🔍
04/03/2017 +1 days 🔍
11/24/2022 +2061 days 🔍

Sourcesinfo

Vendor: huawei.com

Advisory: sa-20161207-01
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-8776 (🔍)
SecurityFocus: 94836 - Huawei P9 and P9 Lite CVE-2016-8776 Security Bypass Vulnerability
OSVDB: - CVE-2016-8776 - Huawei - P9 Firmware - Low

Entryinfo

Created: 04/03/2017 09:05 AM
Updated: 11/24/2022 02:43 PM
Changes: 04/03/2017 09:05 AM (59), 08/25/2020 09:24 AM (5), 11/24/2022 02:43 PM (4)
Complete: 🔍
Cache ID: 18:892:40

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