5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8 Medium
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
ACTIVE
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/SC:L/VI:L/SI:L/VA:N/SA:N
6.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
14.1%
An attacker could send a user a URL that if clicked on could execute malicious JavaScript in their browser.
The following version of Uniview NVR, a network video recorder, is affected:
The affected product is vulnerable to reflected cross-site scripting attack (XSS). An attacker could send a user a URL that if clicked on could execute malicious JavaScript in their browser. This vulnerability also requires authentication before it can be exploited, so the scope and severity is limited. Also, even if JavaScript is executed, no additional benefits are obtained.
CVE-2024-3850 has been assigned to this vulnerability. A CVSS v3.1 base score of 5.4 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N).
A CVSS v4 score has also been calculated for CVE-2024-3850. A base score of 4.8 has been calculated; the CVSS vector string is (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N).
CISA discovered a public Proof of Concept (PoC) as authored by Bleron Rrustemi and reported it to Uniview.
Uniview encourages users to obtain the fixed version, Uniview NVR-B3801.20.17.240507, and update. You may contact your local dealer, Uniview Service Hotline, or regional technical support for assistance.
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:
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.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3850
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-3850
cwe.mitre.org/data/definitions/79.html
github.com/cisagov/CSAF
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
twitter.com/CISAgov
twitter.com/intent/tweet?text=Uniview%20NVR301-04S2-P4+https://www.cisa.gov/news-events/ics-advisories/icsa-24-156-01
us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf
www.cisa.gov/resources-tools/resources/ics-recommended-practices
www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/topics/industrial-control-systems
www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01
www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B
www.dhs.gov
www.dhs.gov/foia
www.dhs.gov/performance-financial-reports
www.facebook.com/CISA
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-24-156-01&title=Uniview%20NVR301-04S2-P4
www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
www.instagram.com/cisagov
www.linkedin.com/company/cybersecurity-and-infrastructure-security-agency
www.linkedin.com/sharing/share-offsite/?url=https://www.cisa.gov/news-events/ics-advisories/icsa-24-156-01
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-24-156-01
www.uniview.com/Support/Service_Hotline/
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=Uniview%20NVR301-04S2-P4&body=www.cisa.gov/news-events/ics-advisories/icsa-24-156-01
5.4 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
4.8 Medium
CVSS4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
ACTIVE
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/SC:L/VI:L/SI:L/VA:N/SA:N
6.9 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
14.1%