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    CVE-2020-28055

    A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01-LF1 V373 and below by TCL Technology Group Corporation allows a local unprivileged attacker, such as a malicious App, to read & write to the /data/vendor/tcl, /data/vendor/upgrade, and /var/TerminalManager directories within the TV file system. An attacker, such as a malicious APK or local unprivileged user could perform fake system upgrades by writing to the /data/vendor/upgrage folder.

    Published:Nov 10, 2020
    Last Modified:Nov 21, 2024
    EPS:Nov 10, 2020
    EPSS Score:0.00062
    CVSS Score:7.8

    Affected Products

    Vendor
    Tcl
    Product
    32s330
    Vendor
    Tcl
    Product
    32s330 Firmware
    Vendor
    Tcl
    Product
    40s330
    Vendor
    Tcl
    Product
    40s330 Firmware
    Vendor
    Tcl
    Product
    43s434
    Vendor
    Tcl
    Product
    43s434 Firmware
    Vendor
    Tcl
    Product
    50s434
    Vendor
    Tcl
    Product
    50s434 Firmware
    Vendor
    Tcl
    Product
    55s434
    Vendor
    Tcl
    Product
    55s434 Firmware
    Vendor
    Tcl
    Product
    65s434
    Vendor
    Tcl
    Product
    65s434 Firmware
    Vendor
    Tcl
    Product
    75s434
    Vendor
    Tcl
    Product
    75s434 Firmware

    Exploits

    https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdhttps://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/https://sick.codes/sick-2020-012https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdhttps://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/https://sick.codes/sick-2020-012

    References

    https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md
    https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf
    https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf
    https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/
    https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/
    https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/
    https://sick.codes/sick-2020-012
    https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs
    https://twitter.com/johnjhacking/
    https://twitter.com/sickcodes/
    https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md
    https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf
    https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf
    https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/
    https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/
    https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/
    https://sick.codes/sick-2020-012
    https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs
    https://twitter.com/johnjhacking/
    https://twitter.com/sickcodes/

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High