Headline
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.
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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