CVE-2023-31476: An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the fi...

Summary

An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the filename and path is no more than 6 characters (the working directory is /www).

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
gl-inet	gl-mv1000w_firmware	<= 3.215 `cpe:2.3:o:gl-inet:gl-mv1000w_firmware::::::::`
gl-inet	gl-mv1000_firmware	<= 3.215 `cpe:2.3:o:gl-inet:gl-mv1000_firmware::::::::`

Original advisory text

An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the fi...

An issue was discovered on GL.iNet devices running firmware before 3.216. There is an arbitrary file write in which an empty file can be created almost anywhere on the filesystem, as long as the filename and path is no more than 6 characters (the working directory is /www).

References

https://github.com/gl-inet/CVE-issues/blob/main/3.215/GL-MV1000_Arbitrary_File_C... Exploit Third Party Advisory
https://www.gl-inet.com Product