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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.51% probability · 42th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-732
- Affected
- tcl/32s330 firmware · tcl/40s330 firmware · tcl/43s434 firmware · tcl/50s434 firmware · tcl/55s434 firmware · tcl/65s434 firmware · tcl/75s434 firmware
- Source
- cve@mitre.org
References
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.mdExploit, Third Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdfThird Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdfThird Party Advisory
- https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/Third Party Advisory
- https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/Third Party Advisory
- https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/Exploit, Third Party Advisory
- https://sick.codes/sick-2020-012Exploit, Third 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.mdExploit, Third Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdfThird Party Advisory
- https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdfThird Party Advisory
- https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/Third Party Advisory
- https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/Third Party Advisory
- https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/Exploit, Third Party Advisory
- https://sick.codes/sick-2020-012Exploit, Third 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.