Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 19.8%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 7.2
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/
Products affected by CVE-2020-28055
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cpe:2.3:h:tcl:32s330:-
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cpe:2.3:h:tcl:40s330:-
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cpe:2.3:h:tcl:43s434:-
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cpe:2.3:h:tcl:50s434:-
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cpe:2.3:h:tcl:55s434:-
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cpe:2.3:h:tcl:65s434:-
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cpe:2.3:h:tcl:75s434:-
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cpe:2.3:o:tcl:32s330_firmware:-
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cpe:2.3:o:tcl:40s330_firmware:-
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cpe:2.3:o:tcl:43s434_firmware:-
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cpe:2.3:o:tcl:50s434_firmware:-
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cpe:2.3:o:tcl:55s434_firmware:-
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cpe:2.3:o:tcl:65s434_firmware:-
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cpe:2.3:o:tcl:75s434_firmware:-