CVE-2023-6317: webos — Exploit & Fix

Description

A prompt bypass exists in the secondscreen.gateway service running on webOS version 4 through 7. An attacker can create a privileged account without asking the user for the security PIN. Full versions and TV models affected: webOS 4.9.7 - 5.30.40 running on LG43UM7000PLA webOS 5.5.0 - 04.50.51 running on OLED55CXPUA webOS 6.3.3-442 (kisscurl-kinglake) - 03.36.50 running on OLED48C1PUB webOS 7.3.1-43 (mullet-mebin) - 03.33.85 running on OLED55A23LA

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CVSS v3.1 Score

7.2

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
lg	webos	All
lg	lg43um7000pla	All
lg	webos	All
lg	oled55cxpua	All
lg	webos	All
lg	oled48c1pub	All
lg	webos	All
lg	oled55a23la	All

References

Advisories & Patches

https://lgsecurity.lge.com/bulletins/tv#updateDetails https://lgsecurity.lge.com/bulletins/tv#updateDetails

Exploits

https://bitdefender.com/blog/labs/vulnerabilities-identified-in-lg-webos/ https://bitdefender.com/blog/labs/vulnerabilities-identified-in-lg-webos/

Frequently Asked Questions

What is CVE-2023-6317? +

A prompt bypass exists in the secondscreen.gateway service running on webOS version 4 through 7. An attacker can create a privileged account without asking the user for the security PIN. Full versions and TV models affected: webOS 4.9.7 - 5.30.40 running on LG43UM7000PLA webOS 5.5.0 - 04.50.51 running on OLED55CXPUA webOS 6.3.3-442 (kisscurl-kinglake) - 03.36.50 running on OLED48C1PUB webOS 7.3.1-43 (mullet-mebin) - 03.33.85 running on OLED55A23LA It has a CVSS v3.1 base score of 7.2 (HIGH).

How severe is CVE-2023-6317? +

CVE-2023-6317 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-6317? +

CVE-2023-6317 affects products from lg, specifically: lg43um7000pla, oled48c1pub, oled55a23la, oled55cxpua, webos. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-6317? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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