CVE-2020-27403
TCL Android Smart TV Insecure Web Server Information Disclosure 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 an attacker on the adjacent network to arbitrarily browse and download sensitive files over an insecure web server running on port 7989 that lists all files & directories. An unprivileged remote attacker on the adjacent network, can download most system files, leading to serious critical information disclosure. Also, some TV models and/or FW versions may expose the webserver with the entire filesystem accessible on another port. For example, nmap scan for all ports run directly from the TV model U43P6046 (Android 8.0) showed port 7983 not mentioned in the original CVE description, but containing the same directory listing of the entire filesystem. This webserver is bound (at least) to localhost interface and accessible freely to all unprivileged installed apps on the Android such as a regular web browser. Any app can therefore read any files of any other apps including Android system settings including sensitive data such as saved passwords, private keys etc.
INFO
Published Date :
Nov. 10, 2020, 6:15 p.m.
Last Modified :
July 21, 2021, 11:39 a.m.
Source :
[email protected]
Remotely Exploitable :
No
Impact Score :
3.6
Exploitability Score :
2.8
Affected Products
The following products are affected by CVE-2020-27403
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-27403.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-27403 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-27403 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Jul. 21, 2021
Action Type Old Value New Value Changed CWE NVD-CWE-noinfo CWE-200 -
Modified Analysis by [email protected]
Dec. 08, 2020
Action Type Old Value New Value Changed Reference Type https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf No Types Assigned https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf Third Party Advisory Changed Reference Type https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf No Types Assigned https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf Third Party Advisory Changed Reference Type https://github.com/sickcodes/security/issues/1 No Types Assigned https://github.com/sickcodes/security/issues/1 Third Party Advisory Changed Reference Type https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/ No Types Assigned https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/ Third Party Advisory Changed Reference Type https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/ No Types Assigned https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/ Third Party Advisory Changed Reference Type https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs No Types Assigned https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs Vendor Advisory Changed CPE Configuration AND OR *cpe:2.3:o:tcl:v8-r851t02-lf1_firmware:*:*:*:*:*:*:*:* versions up to (including) 295 OR cpe:2.3:h:tcl:v8-r851t02-lf1:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:tcl:32s330_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t10-lf1v091 OR cpe:2.3:h:tcl:32s330:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR *cpe:2.3:o:tcl:v8-t658t01-lf1_firmware:*:*:*:*:*:*:*:* versions up to (including) 373 OR cpe:2.3:h:tcl:v8-t658t01-lf1:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:tcl:40s330_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t10-lf1v091 OR cpe:2.3:h:tcl:40s330:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:43s434_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t02-lf1v440 OR cpe:2.3:h:tcl:43s434:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:50s434_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t02-lf1v440 OR cpe:2.3:h:tcl:50s434:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:55s434_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t02-lf1v440 OR cpe:2.3:h:tcl:55s434:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:65s434_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t02-lf1v440 OR cpe:2.3:h:tcl:65s434:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:75s434_firmware:*:*:*:*:*:*:*:* versions up to (excluding) v8-r851t02-lf1v440 OR cpe:2.3:h:tcl:75s434:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
Dec. 07, 2020
Action Type Old Value New Value Added Reference https://securityledger.com/2020/11/tv-maker-tcl-denies-back-door-promises-better-process/ [No Types Assigned] Added Reference https://securityledger.com/2020/11/security-holes-opened-back-door-to-tcl-android-smart-tvs/ [No Types Assigned] Added Reference https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_Press-Statement-and-Questions_11162020.pdf [No Types Assigned] Added Reference https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs [No Types Assigned] Added Reference https://github.com/sickcodes/security/blob/master/etc/CVE-2020-27403_CVE-2020-28055_GlobalFAQ.pdf [No Types Assigned] -
CVE Modified by [email protected]
Nov. 30, 2020
Action Type Old Value New Value Changed 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 an attacker on the adjacent network to arbitrarily browse and download sensitive files over an insecure web server running on port 7989 that lists all files & directories. An unprivileged remote attacker on the adjacent network, can download most system files, leading to serious critical information disclosure. 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 an attacker on the adjacent network to arbitrarily browse and download sensitive files over an insecure web server running on port 7989 that lists all files & directories. An unprivileged remote attacker on the adjacent network, can download most system files, leading to serious critical information disclosure. Also, some TV models and/or FW versions may expose the webserver with the entire filesystem accessible on another port. For example, nmap scan for all ports run directly from the TV model U43P6046 (Android 8.0) showed port 7983 not mentioned in the original CVE description, but containing the same directory listing of the entire filesystem. This webserver is bound (at least) to localhost interface and accessible freely to all unprivileged installed apps on the Android such as a regular web browser. Any app can therefore read any files of any other apps including Android system settings including sensitive data such as saved passwords, private keys etc. Added Reference https://github.com/sickcodes/security/issues/1 [No Types Assigned] -
Initial Analysis by [email protected]
Nov. 30, 2020
Action Type Old Value New Value Added CVSS V2 NIST (AV:A/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Changed Reference Type https://github.com/sickcodes No Types Assigned https://github.com/sickcodes Third Party Advisory Changed Reference Type https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.md No Types Assigned https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.md Exploit, Third Party Advisory Changed Reference Type https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/ No Types Assigned https://sick.codes/extraordinary-vulnerabilities-discovered-in-tcl-android-tvs-now-worlds-3rd-largest-tv-manufacturer/ Exploit, Third Party Advisory Changed Reference Type https://sick.codes/sick-2020-009 No Types Assigned https://sick.codes/sick-2020-009 Exploit, Third Party Advisory Added CWE NIST NVD-CWE-noinfo Added CPE Configuration AND OR *cpe:2.3:o:tcl:v8-r851t02-lf1_firmware:*:*:*:*:*:*:*:* versions up to (including) 295 OR cpe:2.3:h:tcl:v8-r851t02-lf1:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tcl:v8-t658t01-lf1_firmware:*:*:*:*:*:*:*:* versions up to (including) 373 OR cpe:2.3:h:tcl:v8-t658t01-lf1:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-27403 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-27403
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.18 }} 0.05%
score
0.53776
percentile