Huawei Mate 7 prior V100R001CHNC00B126SP03 tzdriver memory corruption

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.
6.1	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Huawei Mate 7. The impacted element is an unknown function of the component tzdriver. The manipulation results in memory corruption. This vulnerability was named CVE-2015-4421. The attack needs to be approached locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Huawei Mate 7 (Smartphone Operating System). It has been classified as problematic. Affected is an unknown part of the component tzdriver. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The tzdriver module in Huawei Mate 7 (Mate7-TL10) smartphone before V100R001CHNC00B126SP03 allows local users to gain privileges or cause a denial of service (memory corruption) via an unspecified input.

The bug was discovered 05/20/2015. The weakness was presented 10/19/2017 by Di Shen with Qihoo 360 (Website). The advisory is available at www1.huawei.com. This vulnerability is traded as CVE-2015-4421 since 06/08/2015. Local access is required to approach this attack. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 883 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version V100R001CHNC00B126SP03 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 74742†). See VDB-108259 for similar entry. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Smartphone Operating System

Vendor

• Huawei

Name

• Mate 7

License

• commercial

Website

• Vendor: https://www.huawei.com/

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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: Memory corruption
CWE: CWE-119
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: 🔍

0-Day Time: 🔍

Upgrade: Mate 7 V100R001CHNC00B126SP03

Timelineinfo

05/20/2015 🔍
05/20/2015 +0 days 🔍
06/08/2015 +19 days 🔍
10/19/2017 +864 days 🔍
10/19/2017 +0 days 🔍
10/20/2017 +1 days 🔍
11/26/2019 +767 days 🔍

Sourcesinfo

Vendor: huawei.com

Advisory: www1.huawei.com
Researcher: Di Shen
Organization: Qihoo 360
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-4421 (🔍)
GCVE (CVE): GCVE-0-2015-4421
GCVE (VulDB): GCVE-100-108258
SecurityFocus: 74742 - Huawei Mate 7 Smartphone Multiple Local Privilege Escalation Vulnerabilities

See also: 🔍

Entryinfo

Created: 10/20/2017 08:44
Updated: 11/26/2019 17:52
Changes: 10/20/2017 08:44 (66), 11/26/2019 17:52 (2)
Complete: 🔍
Cache ID: 216::103

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

Discussion

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