7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 High
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
61.5%
Successful exploitation of these vulnerabilities could allow an unauthorized user to store dangerous data in a trusted database; potentially exposing sensitive information; allow malicious users to upload arbitrary files; provide attackers a way to traverse the file system to access files or directories that are outside of the restricted directory; or result in exposure of data or unintended code execution.
The following version of SmartPTT SCADA Server, an integrated voice and data dispatch software, is affected:
An authenticated attacker can inject arbitrary JavaScript into critical parameters.
CVE-2021-43932 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
An unauthenticated user can request various files from the server without any authentication or authorization.
CVE-2021-43938 has been assigned to this vulnerability. A CVSS v3 base score of 8.1 has been calculated; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
The server has a feature that allows the upload of application updates; however, validation is not required, which enables malicious users to upload arbitrary files.
CVE-2021-43934 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
The software uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize dot slash sequences that can resolve to a location that is outside of that directory.
CVE-2021-43930 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
The web application does not, or cannot, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request.
CVE-2021-43937 has been assigned to this vulnerability. A CVSS v3 base score of 7.6 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L).
Michael Heinzl reported these vulnerabilities to CISA.
Elcomplus has released an update to fix these vulnerabilities and recommends users upgrade to Version 2.3.4 or later.
For more information, please contact Elcomplus support.
CISA recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. Specifically, users should:
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. Several recommended 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 on cisa.gov in the Technical Information Paper, ICS-TIP-12-146-01B–Targeted Cyber Intrusion Detection and Mitigation Strategies.
Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to CISA for tracking and correlation against other incidents.
No known public exploits specifically target these vulnerabilities.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-43930
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-43932
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-43934
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-43937
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-43938
cwe.mitre.org/data/definitions/200.html
cwe.mitre.org/data/definitions/35.html
cwe.mitre.org/data/definitions/352.html
cwe.mitre.org/data/definitions/434.html
cwe.mitre.org/data/definitions/79.html
drive.google.com/drive/folders/1ovX1IdMKtVDnrBcSbKkY40e57Ib2bIex
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
support.smartptt.com/hc/en-us
twitter.com/CISAgov
twitter.com/intent/tweet?text=Elcomplus%20SmartPTT%20SCADA%20Server+https://www.cisa.gov/news-events/ics-advisories/icsa-22-109-05
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/recommended-practices
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.cisa.gov/uscert/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
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www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
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www.youtube.com/@cisagov
mailto:?subject=Elcomplus%20SmartPTT%20SCADA%20Server&body=www.cisa.gov/news-events/ics-advisories/icsa-22-109-05
7.5 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:P/A:P
9.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.7 High
AI Score
Confidence
Low
0.002 Low
EPSS
Percentile
61.5%