Lucene search

Industrial Control Systems Cyber Emergency Response TeamAA23-250A

HistorySep 07, 2023 - 12:00 p.m.

Multiple Nation-State Threat Actors Exploit CVE-2022-47966 and CVE-2022-42475

2023-09-0712:00:00

Industrial Control Systems Cyber Emergency Response Team

www.cisa.gov

10 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.976 High

EPSS

Percentile

100.0%

JSON

Actions to take today to mitigate malicious cyber activity:

Patch all systems for known exploited vulnerabilities (KEVs), including firewall security appliances.
Monitor for unauthorized use of remote access software using endpoint detection tools.
Remove unnecessary (disabled) accounts and groups from the enterprise that are no longer needed, especially privileged accounts.

References

attack.mitre.org/versions/v11/software/S0508/

attack.mitre.org/versions/v13/datasources/DS0002/

attack.mitre.org/versions/v13/datasources/DS0003/

attack.mitre.org/versions/v13/datasources/DS0009/

attack.mitre.org/versions/v13/datasources/DS0017/

attack.mitre.org/versions/v13/datasources/DS0028/

attack.mitre.org/versions/v13/datasources/DS0029/

attack.mitre.org/versions/v13/matrices/enterprise/

attack.mitre.org/versions/v13/mitigations/M1016/

attack.mitre.org/versions/v13/mitigations/M1032/

attack.mitre.org/versions/v13/mitigations/M1042/

attack.mitre.org/versions/v13/mitigations/M1050/

attack.mitre.org/versions/v13/mitigations/M1051/

attack.mitre.org/versions/v13/software/S0002/

attack.mitre.org/versions/v13/tactics/TA0009/

attack.mitre.org/versions/v13/tactics/TA0010/

attack.mitre.org/versions/v13/techniques/T1003/

attack.mitre.org/versions/v13/techniques/T1003/001/

attack.mitre.org/versions/v13/techniques/T1003/002/

attack.mitre.org/versions/v13/techniques/T1012/

attack.mitre.org/versions/v13/techniques/T1018/

attack.mitre.org/versions/v13/techniques/T1021/001/

attack.mitre.org/versions/v13/techniques/T1027/009/

attack.mitre.org/versions/v13/techniques/T1036/004/

attack.mitre.org/versions/v13/techniques/T1036/008/

attack.mitre.org/versions/v13/techniques/T1040/

attack.mitre.org/versions/v13/techniques/T1046/

attack.mitre.org/versions/v13/techniques/T1049/

attack.mitre.org/versions/v13/techniques/T1053/005/

attack.mitre.org/versions/v13/techniques/T1057/

attack.mitre.org/versions/v13/techniques/T1059/001/

attack.mitre.org/versions/v13/techniques/T1059/007/

attack.mitre.org/versions/v13/techniques/T1068/

attack.mitre.org/versions/v13/techniques/T1070/001/

attack.mitre.org/versions/v13/techniques/T1071/001/

attack.mitre.org/versions/v13/techniques/T1074/

attack.mitre.org/versions/v13/techniques/T1078/003/

attack.mitre.org/versions/v13/techniques/T1133/

attack.mitre.org/versions/v13/techniques/T1136/001/

attack.mitre.org/versions/v13/techniques/T1190/

attack.mitre.org/versions/v13/techniques/T1219/

attack.mitre.org/versions/v13/techniques/T1505/003/

attack.mitre.org/versions/v13/techniques/T1543/003/

attack.mitre.org/versions/v13/techniques/T1553/002/

attack.mitre.org/versions/v13/techniques/T1564/001/

attack.mitre.org/versions/v13/techniques/T1564/003/

attack.mitre.org/versions/v13/techniques/T1570/

attack.mitre.org/versions/v13/techniques/T1571/

attack.mitre.org/versions/v13/techniques/T1572/

attack.mitre.org/versions/v13/techniques/T1573/002/

attack.mitre.org/versions/v13/techniques/T1583/005/

attack.mitre.org/versions/v13/techniques/T1587/001/

attack.mitre.org/versions/v13/techniques/T1588/002/

datatracker.ietf.org/doc/rfc9116/

github.com/cisagov/Decider/

github.com/projectdiscovery/interactsh

learn.microsoft.com/en-us/windows-server/administration/windows-commands/quser

learn.microsoft.com/en-us/windows-server/identity/ad-ds/plan/security-best-practices/best-practices-for-securing-active-directory

learn.microsoft.com/en-us/windows/security/threat-protection/windows-security-configuration-framework/windows-security-baselines

media.defense.gov/2019/Sep/09/2002180325/-1/-1/0/Segment%20Networks%20and%20Deploy%20Application%20Aware%20Defenses%20-%20Copy.pdf

nvd.nist.gov/vuln/detail/CVE-2022-42475

nvd.nist.gov/vuln/detail/CVE-2022-47966

public.govdelivery.com/accounts/USDHSCISA/subscriber/new?topic_id=USDHSCISA_138

snort.org/rule_docs/1-58992

twitter.com/CISAgov

twitter.com/intent/tweet?text=Multiple%20Nation-State%20Threat%20Actors%20Exploit%20CVE-2022-47966%20and%20CVE-2022-42475+https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-250a

www.cisa.gov/cross-sector-cybersecurity-performance-goals

www.cisa.gov/known-exploited-vulnerabilities-catalog

www.cisa.gov/MFA

www.cisa.gov/news-events/cybersecurity-advisories/aa22-294a

www.cisa.gov/news-events/cybersecurity-advisories/aa22-320a

www.cisa.gov/news-events/cybersecurity-advisories/aa23-075a

www.cisa.gov/news-events/news/best-practices-mitre-attckr-mapping

www.cisa.gov/resources-tools/resources/guide-securing-remote-access-software

www.cisa.gov/sites/default/files/2023-03/CISA_CPG_REPORT_v1.0.1_FINAL.pdf

www.cisa.gov/sites/default/files/publications/CISAInsights-Cyber-RemediateVulnerabilitiesforInternetAccessibleSystems_S508C.pdf

www.cisa.gov/sites/default/files/publications/layering-network-security-segmentation_infographic_508_0.pdf

www.cisa.gov/topics/cyber-threats-and-advisories/cyber-hygiene-services

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/cybersecurity-advisories/aa23-250a&title=Multiple%20Nation-State%20Threat%20Actors%20Exploit%20CVE-2022-47966%20and%20CVE-2022-42475

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/cybersecurity-advisories/aa23-250a

www.nsa.gov/Press-Room/News-Highlights/Article/Article/2949885/nsa-details-network-infrastructure-best-practices/

www.oig.dhs.gov/

www.surveymonkey.com/r/CISA-cyber-survey?product=https://www.cisa.gov/news-events/cybersecurity-advisories/aa23-250a

www.usa.gov/

www.whitehouse.gov/

www.youtube.com/@cisagov

mailto:?subject=Multiple%20Nation-State%20Threat%20Actors%20Exploit%20CVE-2022-47966%20and%20CVE-2022-42475&body=www.cisa.gov/news-events/cybersecurity-advisories/aa23-250a