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    May 2023
    Product Security Bulletin

    Published 2023-05-05

    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).

    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-2023-20726, CVE-2023-20694, CVE-2023-20695, CVE-2023-20696, CVE-2023-20697, CVE-2023-20698, CVE-2023-20699
    Medium CVE-2023-20700, CVE-2023-20701, CVE-2023-20703, CVE-2023-20704, CVE-2023-20705, CVE-2023-20706, CVE-2023-20707, CVE-2023-20708, CVE-2023-20709, CVE-2023-20710, CVE-2023-20711, CVE-2023-20717, CVE-2023-20718, CVE-2023-20719, CVE-2023-20720, CVE-2023-20721, CVE-2023-20722, CVE-2023-20673

    Details

    CVE CVE-2023-20726
    Title Improper access control in mnld
    Severity High
    Vulnerability Type ID
    CWE CWE-284 Improper Access Control
    Description In mnld, there is a possible leak of GPS location 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 MT2731, MT2735, MT2737, MT6580, MT6739, MT6761, MT6762, MT6765, MT6767, MT6768, MT6769, MT6771, MT6779, MT6781, MT6783, MT6785, MT6789, MT6833, MT6853, MT6855, MT6873, MT6877, MT6879, MT6880, MT6883, MT6885, MT6886, MT6889, MT6890, MT6891, MT6893, MT6895, MT6896, MT6980, MT6980D, MT6983, MT6985, MT6990, MT8167, MT8168, MT8173, MT8185, MT8321, MT8362A, MT8365, MT8385, MT8666, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0 / OpenWrt 19.07, 21.02 / Yocto 2.6, 3.3 / RDKB 2022Q3

    CVE CVE-2023-20694
    Title Improper input validation in preloader
    Severity High
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In preloader, 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, MT6739, MT6761, MT6765, MT6768, MT6769, MT6771, MT6779, MT6785, MT6789, MT6853, MT6855, MT6873, MT6879, MT6880, MT6885, MT6890, MT6895, MT6983, MT8167, MT8175, MT8185, MT8195, MT8321, MT8365, MT8385, MT8395, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 12.0, 13.0 / OpenWrt 19.07, 21.02

    CVE CVE-2023-20695
    Title Improper input validation in preloader
    Severity High
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In preloader, 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 MT6835, MT6880, MT6886, MT6890, MT6980, MT6985, MT6990, MT8167, MT8175, MT8185, MT8195, MT8321, MT8365, MT8385, MT8395, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 13.0 / OpenWrt 19.07, 21.02

    CVE CVE-2023-20696
    Title Improper input validation in preloader
    Severity High
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In preloader, 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 MT6880, MT6890, MT8167, MT8175, MT8185, MT8195, MT8321, MT8365, MT8385, MT8395, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 13.0 / OpenWrt 19.07, 21.02

    CVE CVE-2023-20697
    Title Improper input validation in keyinstall
    Severity High
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20698
    Title Improper input validation in keyinstall
    Severity High
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8673, MT8675, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20699
    Title Improper input validation in adsp
    Severity High
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In adsp, 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 MT6895, MT6983, MT8781, MT8791, MT8791T, MT8797
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20700
    Title Out-of-bounds write in widevine
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-787 Out-of-bounds Write
    Description In widevine, there is a possible out of bounds write due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6762, MT6765, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8195, MT8768, MT8786, MT8788, MT8789, MT8797
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2023-20701
    Title Out-of-bounds write in widevine
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-787 Out-of-bounds Write
    Description In widevine, there is a possible out of bounds write due to a logic error. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6762, MT6765, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8195, MT8768, MT8786, MT8788, MT8789, MT8797
    Affected Software Versions Android 11.0, 12.0

    CVE CVE-2023-20703
    Title Improper input validation in apu
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In apu, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8183, MT8195
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20704
    Title Improper input validation in apu
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In apu, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8183, MT8195
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20705
    Title Improper input validation in apu
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In apu, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8183, MT8195
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20706
    Title Improper input validation in apu
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In apu, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6853, MT6853T, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT8183, MT8195
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20707
    Title Improper input validation in ril
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In ril, 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 MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT8321, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791T, MT8797
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20708
    Title Improper input validation in keyinstall
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read 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, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20709
    Title Improper input validation in keyinstall
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20710
    Title Improper input validation in keyinstall
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6889, MT6891, MT6893, MT6895, MT6983, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20711
    Title Improper input validation in keyinstall
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In keyinstall, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6731, MT6735, MT6737, MT6739, MT6753, MT6757, MT6757C, MT6757CD, MT6757CH, MT6761, MT6762, MT6763, MT6765, MT6768, MT6769, MT6771, MT6779, MT6781, MT6785, MT6789, MT6833, MT6835, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6879, MT6883, MT6885, MT6886, MT6889, MT6891, MT6893, MT6895, MT6983, MT6985, MT8185, MT8321, MT8385, MT8666, MT8667, MT8765, MT8766, MT8768, MT8781, MT8786, MT8788, MT8789, MT8791, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20717
    Title Exposure of sensitive information to an unauthorized actor in vcu
    Severity Medium
    Vulnerability Type ID
    CWE CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
    Description In vcu, there is a possible leak of dma buffer due to a race condition. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8168, MT8175, MT8365, MT8786, MT8789, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0

    CVE CVE-2023-20718
    Title Improper input validation in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In vcu, 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 MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8168, MT8175, MT8195, MT8365, MT8395, MT8673, MT8781, MT8786, MT8789, MT8791T, MT8797
    Affected Software Versions Android 11.0, 12.0, 13.0 / Iot-Yocto 22.2 (Yocto 4.0)

    CVE CVE-2023-20719
    Title Improper input validation in pqframework
    Severity Medium
    Vulnerability Type ID
    CWE CWE-20 Improper Input Validation
    Description In pqframework, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6580, MT6739, MT6761, MT6765, MT6768, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6877, MT6879, MT6883, MT6885, MT6889, MT6893, MT6895, MT6983, MT6985, MT8167, MT8168, MT8195, MT8673
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20720
    Title Improper input validation in pqframework
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In pqframework, there is a possible out of bounds read 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 MT6895, MT6983, MT8167, MT8168, MT8195, MT8673
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20721
    Title Improper input validation in isp
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In isp, there is a possible out of bounds write due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6879, MT6895, MT6983, MT8195, MT8395, MT8673
    Affected Software Versions Android 12.0, 13.0 / Iot-Yocto 22.2 (Yocto 4.0)

    CVE CVE-2023-20722
    Title Improper input validation in m4u
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-20 Improper Input Validation
    Description In m4u, there is a possible out of bounds write due to improper input validation. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT6765, MT6768, MT8768
    Affected Software Versions Android 12.0, 13.0

    CVE CVE-2023-20673
    Title Incorrect comparison in vcu
    Severity Medium
    Vulnerability Type EoP
    CWE CWE-697 Incorrect Comparison
    Description In vcu, there is a possible memory corruption due to type confusion. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
    Affected Chipsets MT5696, MT5836, MT5838, MT6768, MT6769, MT6779, MT6781, MT6785, MT6789, MT6833, MT6853, MT6853T, MT6855, MT6873, MT6875, MT6877, MT6883, MT6885, MT6889, MT6891, MT6893, MT8185, MT8195, MT8395, MT8781, MT8786, MT8789, MT8791, MT8797, MT9000, MT9023, MT9025, MT9618, MT9653, MT9687, MT9689, MT9902, MT9932, MT9952, MT9972, MT9982
    Affected Software Versions Android 11.0, 12.0, 13.0 / Iot-Yocto 22.2 (Yocto 4.0)

    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 May 5, 2023 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.

    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.