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…
Does this matter?
Lower severity and a low EPSS score (2.72%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.72% probability · 85th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- 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/sickcodesThird Party Advisory
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.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://github.com/sickcodes/security/issues/1Third 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-2020-009Exploit, Third Party Advisory
- https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvsVendor Advisory
- https://github.com/sickcodesThird Party Advisory
- https://github.com/sickcodes/security/blob/master/advisories/SICK-2020-009.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://github.com/sickcodes/security/issues/1Third 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-2020-009Exploit, Third Party Advisory
- https://support.tcl.com/vulnerabilities-found-in-tcl-android-tvsVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.