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CVE-2022-21745: June 2022

In WIFI Firmware, there is a possible memory corruption due to a use after free. This could lead to remote escalation of privilege, when devices are connecting to the attacker-controllable Wi-Fi hotspot, with no additional execution privileges needed. User interaction is not needed for exploitation. Patch ID: ALPS06468872; Issue ID: ALPS06468872.

CVE
#vulnerability#web#android#dos#rce#buffer_overflow#wifi

June 2022 Product Security Bulletin

Published 2022-06-06

The MediaTek Product Security Bulletin contains details of security vulnerabilities affecting MediaTek Smartphone, Tablet, AIoT, Smart display, Smart platform, OTT and TV chipsets. Device OEMs have been notified of all the issues and the corresponding security patches for at least two months before publication.

The severity of the identified vulnerabilities was conducted based on the Common Vulnerability Scoring System version 3.1 (CVSS v3.1).

****Summary****

Severity

CVEs

High

CVE-2022-21745

Medium

CVE-2022-21746, CVE-2022-21747, CVE-2022-21748, CVE-2022-21749, CVE-2022-21750, CVE-2022-21751, CVE-2022-21752, CVE-2022-21753, CVE-2022-21754, CVE-2022-21755, CVE-2022-21756, CVE-2022-21757, CVE-2022-21758, CVE-2022-21759, CVE-2022-21760, CVE-2022-21761, CVE-2022-21762

****Details****

CVE

CVE-2022-21745

Title

Use after free in WIFI Firmware

Severity

High

Vulnerability Type

EoP

CWE

CWE-416 Use After Free

Description

In WIFI Firmware, there is a possible memory corruption due to a use after free. This could lead to remote escalation of privilege, when devices are connecting to the attacker-controllable Wi-Fi hotspot, with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6762, MT6765, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT6985, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 10.0, 11.0, 12.0

CVE

CVE-2022-21746

Title

Improper input validation in imgsensor

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-20 Improper Input Validation

Description

In imgsensor, there is a possible out of bounds read due to a missing bounds check. This could lead to local denial of service with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6885, MT6893, MT8167, MT8167S, MT8168, MT8175, MT8362A, MT8365, MT8788

Affected Software Versions

Android 9.0, 10.0, 11.0, 12.0

CVE

CVE-2022-21747

Title

Improper input validation in imgsensor

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-20 Improper Input Validation

Description

In imgsensor, there is a possible out of bounds read due to a missing bounds check. This could lead to local denial of service with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6885, MT6893, MT8167, MT8167S, MT8168, MT8173, MT8362A, MT8365, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 9.0, 10.0, 11.0, 12.0

CVE

CVE-2022-21748

Title

Improper access control in telephony

Severity

Medium

Vulnerability Type

ID

CWE

CWE-284 Improper Access Control

Description

In telephony, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with User execution privileges needed. User interaction is needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6737, MT6739, MT6753, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8321, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21749

Title

Improper access control in telephony

Severity

Medium

Vulnerability Type

ID

CWE

CWE-284 Improper Access Control

Description

In telephony, there is a possible information disclosure due to a missing permission check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6739, MT6750, MT6750S, MT6752, MT6753, MT6755, MT6755S, MT6757, MT6757C, MT6757CD, MT6757CH, MT6758, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT6985, MT8321, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21750

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6779, MT6781, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21751

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6771, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0

CVE

CVE-2022-21752

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21753

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6739, MT6761, MT6765, MT6768, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21754

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6761, MT6762, MT6765, MT6768, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21755

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

ID

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6731, MT6732, MT6735, MT6737, MT6739, MT6750, MT6750S, MT6752, MT6753, MT6755, MT6755S, MT6757, MT6757C, MT6757CD, MT6757CH, MT6758, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6795, MT6797, MT6799, MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21756

Title

Improper input validation in WLAN driver

Severity

Medium

Vulnerability Type

ID

CWE

CWE-20 Improper Input Validation

Description

In WLAN driver, there is a possible out of bounds read due to an incorrect bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6833, MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6880, MT6883, MT6885, MT6889, MT6890, MT6891, MT6893, MT6895, MT6983, MT6985, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8695, MT8696, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21757

Title

Uncontrolled resource consumption in WIFI Firmware

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-400 Uncontrolled Resource Consumption

Description

In WIFI Firmware, there is a possible system crash due to a missing count check. This could lead to remote denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6833, MT6853, MT6877, MT6885, MT6889, MT6983, MT6985, MT8167S, MT8168, MT8175, MT8183, MT8185, MT8362A, MT8365, MT8385, MT8667, MT8675, MT8766, MT8768, MT8786, MT8788, MT8789, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21758

Title

Double free in ccu

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-415 Double Free

Description

In ccu, there is a possible memory corruption due to a double free. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6833, MT6853, MT6873, MT6877, MT6885, MT6893

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21759

Title

Buffer copy without checking size of input (‘classic buffer overflow’) in power service

Severity

Medium

Vulnerability Type

EoP

CWE

CWE-120 Buffer Copy without Checking Size of Input (‘Classic Buffer Overflow’)

Description

In power service, there is a possible out of bounds write due to a missing bounds check. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6580, MT6735, MT6739, MT6761, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6833, MT6853, MT6873, MT6875, MT6877, MT6879, MT6885, MT6891, MT6893, MT6895, MT6983, MT8167, MT8167S, MT8168, MT8173, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8675, MT8765, MT8766, MT8768, MT8786, MT8788, MT8789, MT8791, MT8797

Affected Software Versions

Android 11.0, 12.0

CVE

CVE-2022-21760

Title

Integer overflow or wraparound in apusys driver

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-190 Integer Overflow or Wraparound

Description

In apusys driver, there is a possible system crash due to an integer overflow. This could lead to local denial of service with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT9636, MT9638, MT9666

Affected Software Versions

Android 12.0

CVE

CVE-2022-21761

Title

Integer overflow or wraparound in apusys driver

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-190 Integer Overflow or Wraparound

Description

In apusys driver, there is a possible system crash due to an integer overflow. This could lead to local denial of service with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT9636, MT9638, MT9666

Affected Software Versions

Android 11.0

CVE

CVE-2022-21762

Title

Integer overflow or wraparound in apusys driver

Severity

Medium

Vulnerability Type

DoS

CWE

CWE-190 Integer Overflow or Wraparound

Description

In apusys driver, there is a possible system crash due to an integer overflow. This could lead to local denial of service with System execution privileges needed. User interaction is not needed for exploitation.

Affected Chipsets

MT6853, MT6853T, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT9636, MT9638, MT9666

Affected Software Versions

Android 12.0

****Vulnerability Type Definition****

Abbreviation

Definition

RCE

Remote Code Execution

EoP

Elevation of Privilege

ID

Information Disclosure

DoS

Denial of Service

N/A

Classification not available

****Versions****

Version

Date

Description

1.0

June 6, 2022

Bulletin published.

****Notes****

Information above is generated only at the time of creation of this Security Bulletin. The list of affected chipsets could be not complete. For any further information, device OEMs can reach your MediaTek contact person if needed.

If you want to report a security vulnerability in MediaTek chipsets or products, please go to Report Security Vulnerability page on MediaTek website.

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