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.

CVSS v3 7.8 HIGH
CVSS v2.0 7.2 HIGH

7.8^/10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.2^/10

CVSS v2.0 : HIGH

V2 Legend

Vector : AV:L/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 3.9 / Impact : 10.0

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-012.md	Exploit Third Party Advisory
https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf	Third Party Advisory
https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf	Third 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-2020-012	Exploit Third Party Advisory
https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs	Vendor 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.md	Exploit Third Party Advisory
https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf	Third Party Advisory
https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf	Third 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-2020-012	Exploit Third Party Advisory
https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs	Vendor Advisory
https://twitter.com/johnjhacking/	Third Party Advisory
https://twitter.com/sickcodes/	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:tcl:32s330_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:32s330:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:tcl:40s330_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:40s330:-:*:*:*:*:*:*:*

Configuration 3 (hide)

AND

cpe:2.3:o:tcl:43s434_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:43s434:-:*:*:*:*:*:*:*

Configuration 4 (hide)

AND

cpe:2.3:o:tcl:50s434_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:50s434:-:*:*:*:*:*:*:*

Configuration 5 (hide)

AND

cpe:2.3:o:tcl:55s434_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:55s434:-:*:*:*:*:*:*:*

Configuration 6 (hide)

AND

cpe:2.3:o:tcl:65s434_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:65s434:-:*:*:*:*:*:*:*

Configuration 7 (hide)

AND

cpe:2.3:o:tcl:75s434_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:tcl:75s434:-:*:*:*:*:*:*:*

History

21 Nov 2024, 05:22

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

Information

Published : 2020-11-10 18:15

Updated : 2024-11-21 05:22

NVD link : CVE-2020-28055

Mitre link : CVE-2020-28055

CVE.ORG link : CVE-2020-28055

JSON object : View

Products Affected

tcl

65s434
40s330_firmware
43s434
32s330
50s434
55s434
75s434
32s330_firmware
75s434_firmware
50s434_firmware
43s434_firmware
65s434_firmware
55s434_firmware
40s330

CWE

CWE-732

Incorrect Permission Assignment for Critical Resource

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7.8 /10