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CVE
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CVE-2020-28055Date: (C)2020-11-12   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 7.8CVSS Score : 7.2
Exploit Score: 1.8Exploit Score: 3.9
Impact Score: 5.9Impact Score: 10.0
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: LOCALAccess Vector: LOCAL
Attack Complexity: LOWAccess Complexity: LOW
Privileges Required: LOWAuthentication: NONE
User Interaction: NONEConfidentiality: COMPLETE
Scope: UNCHANGEDIntegrity: COMPLETE
Confidentiality: HIGHAvailability: COMPLETE
Integrity: HIGH 
Availability: HIGH 
  
Reference:
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/

CWE    1
CWE-732

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