An
unauthenticated URL redirection vulnerability has been identified in Archer
AX20 V2 due to improper validation of user-supplied URL input within the web
interface. An unauthenticated attacker
can craft URLs containing URL-encoded path traversal sequences.
When
processed by the embedded web server, these inputs may cause the device to
respond with HTTP 3xx redirects to attacker-controlled external domains.
This issue affects Archer AX20 V2.0: through 2.1.9 Build 20230829.
URL Redirection to Untrusted Site The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.