ProLink PRS1841 Backdoor Account

2022.12.31
Credit: Lawrence Amer
Risk: High
Local: No
Remote: No
CVE: N/A
CWE: N/A

# Exploit Title: Router backdoor - ProLink PRS1841 PLDT Home fiber # Exploit Author: Lawrence Amer @zux0x3a # Vendor Homepage: https://prolink2u.com/product/prs1841/ # Firmware : PRS1841 U V2 # reference: https://0xsp.com/security%20research%20%20development%20srd/backdoor-discovered-in-pldt-home-fiber-routers/ Description ======================== A silent privileged backdoor account discovered on the Prolink PRS1841 routers; allows attackers to gain command execution privileges to the router OS. The vulnerable account issued by the vendor was identified as "adsl" and "realtek" as the default password; attackers could use this account to access the router remotely/internally using either Telnet or FTP protocol. PoC ============================= adsl:$1$$m9g7v7tSyWPyjvelclu6D1:0:0::/tmp:/bin/cli


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