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 1. Home
 2. News & Events
 3. Cybersecurity Advisories
 4. ICS Advisory

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ICS Advisory


VIMESA VHF/FM TRANSMITTER BLUE PLUS

Release Date
October 24, 2024
Alert Code
ICSA-24-298-01
Related topics:
Industrial Control System Vulnerabilities, Industrial Control Systems


View CSAF(link is external)


1. EXECUTIVE SUMMARY

 * CVSS v4 6.9
 * ATTENTION: Exploitable remotely/low attack complexity/public exploits are
   available
 * Vendor: VIMESA
 * Equipment: VHF/FM Transmitter Blue Plus
 * Vulnerability: Improper Access Control


2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to perform
a Denial-of-Service.


3. TECHNICAL DETAILS


3.1 AFFECTED PRODUCTS

The following version of VIMESA VHF/FM Transmitter Blue Plus, a VHF/FM
Transmitter, is affected:

 * VHF/FM Transmitter Blue Plus: Version v9.7.1


3.2 VULNERABILITY OVERVIEW

3.2.1 IMPROPER ACCESS CONTROL CWE-284(LINK IS EXTERNAL)

VIMESA VHF/FM Transmitter Blue Plus is suffering from a Denial-of-Service (DoS)
vulnerability. An unauthenticated attacker can issue an unauthorized HTTP GET
request to the unprotected endpoint 'doreboot' and restart the transmitter
operations.

CVE-2024-9692(link is external) has been assigned to this vulnerability. A CVSS
v3.1 base score of 5.3 has been calculated; the CVSS vector string is
(AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L(link is external)).

A CVSS v4 score has also been calculated for CVE-2024-9692(link is external). A
base score of 6.9 has been calculated; the CVSS vector string is
(CVSS4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N(link is
external)).


3.3 BACKGROUND

 * CRITICAL INFRASTRUCTURE SECTORS: Communications
 * COUNTRIES/AREAS DEPLOYED: Worldwide
 * COMPANY HEADQUARTERS LOCATION: Spain


3.4 RESEARCHER

CISA discovered this report authored by Gjoko Krstic.


4. MITIGATIONS

VIMESA has not responded to requests to work with CISA to mitigate these
vulnerabilities. Users of the affected products are encouraged to contact
VIMESA(link is external) for additional information.

CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability, such as:

 * Minimize network exposure for all control system devices and/or systems,
   ensuring they are not accessible from the internet.
 * Locate control system networks and remote devices behind firewalls and
   isolating them from business networks.
 * When remote access is required, use more secure methods, such as Virtual
   Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should
   be updated to the most current version available. Also recognize VPN is only
   as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment
prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices
on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber
defense best practices are available for reading and download, including
Improving Industrial Control Systems Cybersecurity with Defense-in-Depth
Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies
for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available
on the ICS webpage at cisa.gov/ics in the technical information paper,
ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation
Strategies.

Organizations observing suspected malicious activity should follow established
internal procedures and report findings to CISA for tracking and correlation
against other incidents.

CISA also recommends users take the following measures to protect themselves
from social engineering attacks:

 * Do not click web links or open attachments in unsolicited email messages.
 * Refer to Recognizing and Avoiding Email Scams for more information on
   avoiding email scams.
 * Refer to Avoiding Social Engineering and Phishing Attacks for more
   information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been
reported to CISA at this time.


5. UPDATE HISTORY

 * October 24, 2024: Initial Publication

This product is provided subject to this Notification and this Privacy &
Use policy.


TAGS

Topics
Industrial Control System Vulnerabilities, Industrial Control Systems
Sector
Communications Sector


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