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0x01 Vulnerability description

A vulnerability is in the 'fctest.shtml' page of the Wavlink-WiFi-Repeater,Firmware package version RPTA2-77W.M4300.01.GD.2017Sep19,Information about the repeater can be obtained by accessing the constructed URL.

Unauthorized users can obtain the key information of the router by visiting:

http://xxx.xxx.xxx.xxx/fctest.shtml

0x02 Affected version

Wavlink-WiFi-Repeater

0x03 Vulnerability

When the router is running, all the operations of the user are stored in the syslog.shtml page, and the identity verification process is not performed

0x04 PoC verification

image-20220623150043519

image-20220623160430903

0x05 Acknowledgement

Penwei.Huang