4.4 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.8%
Successful exploitation of these vulnerabilities could allow an attacker to leverage the misconfigured privileges to the installed directory and achieve code execution in the applicationβs context and permissions.
The following versions of WIN-911, an alarm notification platform, are affected:
The affected product is vulnerable to a permissions misconfiguration that may allow an attacker to locally write files to the Program Announcer directory and elevate permissions whenever the program is executed.
CVE-2022-23922 has been assigned to this vulnerability. A CVSS v3 base score of 5.6 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L).
The affected product is vulnerable to a permissions misconfiguration that may allow an attacker to locally write files to the program Operator Workspace directory, which holds DLL files and executables. A low-privilege attacker could write a malicious DLL file to the Operator Workspace directory to achieve privilege escalation and the permissions of the user running the program.
CVE-2022-23104 has been assigned to this vulnerability. A CVSS v3 base score of 5.6 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L).
Noam Moshe of Claroty reported these vulnerabilities to CISA.
WIN-911 has released a hotfix that removes write access for the userβs group on the affected directory subfolders. For the hotfix and more information, please use the following link: WIN-911 2021 R1/R2 File Permission Vulnerability.
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-12-146-01BβTargeted 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. These vulnerabilities are not exploitable remotely.
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-23104
web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-23922
cwe.mitre.org/data/definitions/276.html
cwe.mitre.org/data/definitions/276.html
public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138
supportdesk.win911.com/support/solutions/articles/24000074683-win-911-2021-r1-r2-file-permission-vulnerability
twitter.com/CISAgov
twitter.com/intent/tweet?text=WIN-911%202021+https://www.cisa.gov/news-events/ics-advisories/icsa-22-053-03
www.cisa.gov/uscert/ics
www.cisa.gov/uscert/ics
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
www.facebook.com/sharer/sharer.php?u=https://www.cisa.gov/news-events/ics-advisories/icsa-22-053-03&title=WIN-911%202021
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L
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-22-053-03
www.oig.dhs.gov/
www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/ics-advisories/icsa-22-053-03
www.usa.gov/
www.whitehouse.gov/
www.youtube.com/@cisagov
mailto:?subject=WIN-911%202021&body=www.cisa.gov/news-events/ics-advisories/icsa-22-053-03
4.4 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
7.8 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.5 High
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
28.8%