Vulnerability Description
An issue was discovered in KaiOS 3.0 before 3.1. The /system/bin/tctweb_server binary exposes a local web server that responds to GET and POST requests on port 2929. The server accepts arbitrary Bash commands and executes them as root. Because it is not permission or context restricted and returns proper CORS headers, it's accessible to all websites via the browser. At a bare minimum, this allows an attacker to retrieve a list of the user's installed apps, notifications, and downloads. It also allows an attacker to delete local files and modify system properties including the boolean persist.moz.killswitch property (which would render the device inoperable). This vulnerability is partially mitigated by SELinux which prevents reads, writes, or modifications to files or permissions within protected partitions.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kaiostech | Kaios | 3.0 |
Related Weaknesses (CWE)
References
- https://kaios.dev/cve/1411380ExploitVendor Advisory
- https://kaios.dev/cve/1411380ExploitVendor Advisory
FAQ
What is CVE-2023-33294?
CVE-2023-33294 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in KaiOS 3.0 before 3.1. The /system/bin/tctweb_server binary exposes a local web server that responds to GET and POST requests on port 2929. The server accepts arbitrary Bash ...
How severe is CVE-2023-33294?
CVE-2023-33294 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-33294?
Check the references section above for vendor advisories and patch information. Affected products include: Kaiostech Kaios.