VDB-194731 · CVE-2022-20059 · GCVE-0-2022-20059

MediaTek MT8797 USB Preloader out-of-bounds write

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.
3.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in MediaTek MT6761, MT6762, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6885, MT6889, MT6893, MT8183, MT8185, MT8321, MT8385, MT8666, MT8667, MT8675, MT8735A, MT8735B, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797. It has been classified as critical. This impacts an unknown function of the component USB Preloader. This manipulation causes out-of-bounds write. This vulnerability is handled as CVE-2022-20059. It is feasible to perform the attack on the physical device. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in MediaTek MT6761, MT6762, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6885, MT6889, MT6893, MT8183, MT8185, MT8321, MT8385, MT8666, MT8667, MT8675, MT8735A, MT8735B, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791 and MT8797. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component USB Preloader. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was released 03/11/2022. It is possible to read the advisory at corp.mediatek.com. This vulnerability is known as CVE-2022-20059 since 10/12/2021. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Chip Software

Vendor

MediaTek

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.1
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.1
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: No

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: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/12/2021 🔍
03/11/2022 +150 days 🔍
03/11/2022 +0 days 🔍
03/14/2022 +3 days 🔍

Sourcesinfo

Advisory: corp.mediatek.com
Status: Confirmed

CVE: CVE-2022-20059 (🔍)
GCVE (CVE): GCVE-0-2022-20059
GCVE (VulDB): GCVE-100-194731

Entryinfo

Created: 03/11/2022 11:27
Updated: 03/14/2022 09:47
Changes: 03/11/2022 11:27 (37), 03/14/2022 09:47 (1)
Complete: 🔍
Cache ID: 216::103