D Link · D-Link Di-604 · CVE-2013-6026
**Name of the Vulnerable Software and Affected Versions**
D-Link DIR-100
D-Link DIR-120
D-Link DI-624S
D-Link DI-524UP
D-Link DI-604S
D-Link DI-604UP
D-Link DI-604+
D-Link TM-G5240
Planex BRL-04R
Planex BRL-04UR
Planex BRL-04CW
Alpha Networks routers (affected versions not specified)
**Description**
The issue allows remote attackers to bypass authentication and modify settings on the affected routers. This is achieved by using a specific `User-Agent` HTTP header, namely `xmlset roodkcableoj28840ybtide`. There have been real-world incidents where this issue was exploited, specifically in October 2013.
**Recommendations**
For D-Link DIR-100, update the firmware to remove the vulnerable `User-Agent` header handling.
For D-Link DIR-120, restrict access to the web interface until a patch is available.
For D-Link DI-624S, avoid using the web interface for critical operations until the issue is resolved.
For D-Link DI-524UP, consider disabling remote access to the web interface as a temporary workaround.
For D-Link DI-604S, update the router's configuration to limit access to the web interface.
For D-Link DI-604UP, change the default settings to prevent unauthorized access.
For D-Link DI-604+, apply the latest security patch to fix the authentication bypass issue.
For D-Link TM-G5240, modify the `User-Agent` header handling to prevent exploitation.
For Planex BRL-04R, restrict the use of the vulnerable `User-Agent` header.
For Planex BRL-04UR, update the router's software to remove the vulnerable code.
For Planex BRL-04CW, disable the web interface until a fix is available.
For Alpha Networks routers, at the moment, there is no information about a newer version that contains a fix for this vulnerability.