Vulnerability Report

CVE-2020-27403

Title: TCL Android Smart TV Information Disclosure

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2020-27403.

CWE Category CWE-200
Published Date Nov 10, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 6.5 CVSS v3.1
Exploit Probability (EPSS)
2.69%

Vulnerability Summary

CVE-2020-27403: 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.

Impacted Vendors

T
tcl 7

Reference Links

https://github.com/sickcodes https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.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://github.com/sickcodes/security/issues/1 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-2020-009 https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs https://github.com/sickcodes https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.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://github.com/sickcodes/security/issues/1 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-2020-009 https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvs
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.5
Attack Vector
ADJACENT_NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
3.3
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:A/AC:L/Au:N/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-27403 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector ADJACENT_NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.