MediaTek MT8797 TEEI Driver type confusion

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in MediaTek MT6761, MT6765, MT6768, MT6771, MT6779, MT6833, MT6879, MT6885, MT6893, MT6895, MT6983, MT8185, MT8765, MT8766, MT8768, MT8785, MT8786, MT8788, MT8791 and MT8797. It has been rated as critical. Impacted is an unknown function of the component TEEI Driver. This manipulation causes type confusion. The identification of this vulnerability is CVE-2022-21772. The attack can only be executed locally. There is no exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in MediaTek MT6761, MT6765, MT6768, MT6771, MT6779, MT6833, MT6879, MT6885, MT6893, MT6895, MT6983, MT8185, MT8765, MT8766, MT8768, MT8785, MT8786, MT8788, MT8791 and MT8797 (Chip Software). Affected by this vulnerability is an unknown function of the component TEEI Driver. The manipulation with an unknown input leads to a type confusion vulnerability. The CWE definition for the vulnerability is CWE-843. The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In TEEI driver, there is a possible type confusion due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06493842; Issue ID: ALPS06493842.

The weakness was shared 07/07/2022 as ALPS06493842. The advisory is shared at corp.mediatek.com. This vulnerability is known as CVE-2022-21772 since 11/26/2021. Neither technical details nor an exploit are publicly available.

Applying the patch ALPS06493842 is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
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: Type confusion
CWE: CWE-843
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: ALPS06493842

Timelineinfo

11/26/2021 🔍
07/07/2022 +222 days 🔍
07/07/2022 +0 days 🔍
07/19/2022 +12 days 🔍

Sourcesinfo

Advisory: ALPS06493842
Status: Confirmed

CVE: CVE-2022-21772 (🔍)
GCVE (CVE): GCVE-0-2022-21772
GCVE (VulDB): GCVE-100-203329

Entryinfo

Created: 07/07/2022 11:55
Updated: 07/19/2022 18:17
Changes: 07/07/2022 11:55 (41), 07/19/2022 18:17 (17)
Complete: 🔍
Cache ID: 216::103

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