DrayTek Vigor 300B Web Interface Allows Unauthenticated OS Command Injection

Summary

A security flaw in the DrayTek Vigor 300B's Web Management Interface allows an attacker to execute unauthorized commands on the device. This is a concern for users who have not updated their software, but it only affects devices that are no longer supported by the manufacturer. As a result, no patch is available, and users should consider replacing their device with a newer model.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software

Vendor	Product	Affected versions	Fix available
draytek	vigor300b_firmware	<= 1.5.1.6	–

Original title

A vulnerability was identified in DrayTek Vigor 300B up to 1.5.1.6. This affects the function cgiGetFile of the file /cgi-bin/mainfunction.cgi/uploadlangs of the component Web Management Interface....

Original description

A vulnerability was identified in DrayTek Vigor 300B up to 1.5.1.6. This affects the function cgiGetFile of the file /cgi-bin/mainfunction.cgi/uploadlangs of the component Web Management Interface. The manipulation of the argument File leads to os command injection. The attack may be initiated remotely. The exploit is publicly available and might be used. The vendor confirms that "300B is EoL, and this is an authenticated vulnerability. We don't plan to fix it." This vulnerability only affects products that are no longer supported by the maintainer.

nvd CVSS2.0 5.8

nvd CVSS3.1 7.2

nvd CVSS4.0 5.1

Vulnerability type

CWE-77 Command Injection

CWE-78 OS Command Injection

https://github.com/master-abc/cve/issues/42 Exploit Issue Tracking
https://vuldb.com/?ctiid.347394 Permissions Required Third Party Advisory VDB Entry
https://vuldb.com/?id.347394 Third Party Advisory VDB Entry
https://vuldb.com/?submit.757126 Third Party Advisory VDB Entry