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AUSCERT External Security Bulletin Redistribution
ESB-2022.6113
Advisory (icsa-22-326-02) Digital Alert Systems DASDEC
23 November 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: Digital Alert Systems DASDEC
Publisher: ICS-CERT
Operating System: Network Appliance
Resolution: Patch/Upgrade
CVE Names: CVE-2022-40204 CVE-2019-18265
Original Bulletin:
https://us-cert.cisa.gov/ics/advisories/icsa-22-326-02
Comment: CVSS (Max): 4.7 CVE-2019-18265 (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N)
CVSS Source: ICS-CERT
Calculator: https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
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ICS Advisory (ICSA-22-326-02)
Digital Alert Systems DASDEC
Original release date: November 22, 2022
Legal Notice
All information products included in https://us-cert.cisa.gov/ics are provided
"as is" for informational purposes only. The Department of Homeland Security
(DHS) does not provide any warranties of any kind regarding any information
contained within. DHS does not endorse any commercial product or service,
referenced in this product or otherwise. Further dissemination of this product
is governed by the Traffic Light Protocol (TLP) marking in the header. For more
information about TLP, see https://us-cert.cisa.gov/tlp/ .
1. EXECUTIVE SUMMARY
o CVSS v3 4.7
o ATTENTION: Exploitable remotely/low attack complexity/public exploits are
available
o Vendor: Digital Alert Systems
o Equipment: DASDEC
o Vulnerability: Cross-site Scripting
2. RISK EVALUATION
Successful exploitation of these vulnerabilities might result in false alerts
being issued to broadcast or cable sites that are immediately connected to the
compromised system.
3. TECHNICAL DETAILS
3.1 AFFECTED PRODUCTS
The following versions of DASDEC, an emergency communication system, are
affected:
o Versions prior to 4.1 (CVE-2019-18265 only)
o All versions (CVE-2022-40204 only)
3.2 VULNERABILITY OVERVIEW
3.2.1 I MPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79
Digital Alert Systems' DASDEC software prior to version 4.1 contains a
cross-site scripting (XSS) vulnerability where remote attackers could inject
arbitrary web script or HTML code via the username field of the login page or
the HTTP host header. The injected content is stored in logs and rendered when
viewed in the web application.
CVE-2019-18265 has been assigned to this vulnerability. A CVSS v3 base score of
4.7 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:R/S:C/C:N/
I:L/A:N ).
3.2.2 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE
SCRIPTING') CWE-79
Affected versions of Digital Alert Systems' DASDEC software contain a XSS
vulnerability via the Host Header in undisclosed pages after login.
CVE-2022-40204 has been assigned to this vulnerability. A CVSS v3 base score of
4.1 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:R/S:C/C:N/
I:L/A:N ).
3.3 BACKGROUND
o CRITICAL INFRASTRUCTURE SECTORS: Communications, Emergency Services
o COUNTRIES/AREAS DEPLOYED: United States
o COMPANY HEADQUARTERS LOCATION: United States
3.4 RESEARCHER
Ken Pyle reported these vulnerabilities to CISA.
4. MITIGATIONS
Digital Alert Systems recommends users update systems to the latest version.
CVE-2019-18265 has been patched as of Version 4.1, CVE-2022-40204 will be fixed
in a future patch.
CISA recommends users take defensive measures to minimize the risk of
exploitation of this vulnerability these vulnerabilities. Specifically, users
should:
o Minimize network exposure for all control system devices and/or systems,
and ensure they are not accessible from the Internet .
o Locate control system networks and remote devices behind firewalls and
isolate them from business networks.
o When remote access is required, use 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 its 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 at 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 .
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.
For any questions related to this report, please contact the CISA at:
Email: CISAservicedesk@cisa.dhs.gov
Toll Free: 1-888-282-0870
CISA continuously strives to improve its products and services. You can help by
choosing one of the links below to provide feedback about this product.
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