Vulnerability Description
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
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tcl | 32S330 Firmware | < v8-r851t10-lf1v091 |
| Tcl | 32S330 | - |
| Tcl | 40S330 Firmware | < v8-r851t10-lf1v091 |
| Tcl | 40S330 | - |
| Tcl | 43S434 Firmware | < v8-r851t02-lf1v440 |
| Tcl | 43S434 | - |
| Tcl | 50S434 Firmware | < v8-r851t02-lf1v440 |
| Tcl | 50S434 | - |
| Tcl | 55S434 Firmware | < v8-r851t02-lf1v440 |
| Tcl | 55S434 | - |
| Tcl | 65S434 Firmware | < v8-r851t02-lf1v440 |
| Tcl | 65S434 | - |
| Tcl | 75S434 Firmware | < v8-r851t02-lf1v440 |
| Tcl | 75S434 | - |
Related Weaknesses (CWE)
References
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdExploitThird Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28Third Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28Third Party Advisory
- https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-androiThird Party Advisory
- https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-betterThird Party Advisory
- https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-nExploitThird Party Advisory
- https://sick.codes/sick-2020-012ExploitThird Party Advisory
- https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvsVendor Advisory
- https://twitter.com/johnjhacking/Third Party Advisory
- https://twitter.com/sickcodes/Third Party Advisory
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdExploitThird Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28Third Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28Third Party Advisory
- https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-androiThird Party Advisory
- https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-betterThird Party Advisory
FAQ
What is CVE-2020-28055?
CVE-2020-28055 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 m...
How severe is CVE-2020-28055?
CVE-2020-28055 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-28055?
Check the references section above for vendor advisories and patch information. Affected products include: Tcl 32S330 Firmware, Tcl 32S330, Tcl 40S330 Firmware, Tcl 40S330, Tcl 43S434 Firmware.