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AA22-181A: #StopRansomware: MedusaLocker

Jun 30, 2022 / in Uncategorized

Original release date: June 30, 2022 Summary Actions to take today to mitigate cyber threats from ransomware: • Prioritize remediating known exploited vulnerabilities. • Train users to recognize and report phishing attempts. • Enable and enforce multifactor authentication. Note: this joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for…

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AA22-174A: Malicious Cyber Actors Continue to Exploit Log4Shell in VMware Horizon Systems

Jun 23, 2022 / in Uncategorized

Original release date: June 23, 2022 Summary Actions to take today: • Install fixed builds, updating all affected VMware Horizon and UAG systems to the latest versions. If updates or workarounds were not promptly applied following VMware’s release of updates for Log4Shell in December 2021, treat all affected VMware systems as compromised. • Minimize the…

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AA22-158A: People’s Republic of China State-Sponsored Cyber Actors Exploit Network Providers and Devices

Jun 7, 2022 / in Uncategorized

Original release date: June 7, 2022 | Last revised: June 8, 2022 Summary Best Practices • Apply patches as soon as possible • Disable unnecessary ports and protocols • Replace end-of-life infrastructure • Implement a centralized patch management system This joint Cybersecurity Advisory describes the ways in which People’s Republic of China (PRC) state-sponsored cyber…

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AA22-152A: Karakurt Data Extortion Group

Jun 1, 2022 / in Uncategorized

Original release date: June 1, 2022 Summary Actions to take today to mitigate cyber threats from ransomware: • Prioritize patching known exploited vulnerabilities. • Train users to recognize and report phishing attempts. • Enforce multifactor authentication. The Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), the Department of the Treasury (Treasury),…

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AA22-138B: Threat Actors Chaining Unpatched VMware Vulnerabilities for Full System Control

May 18, 2022 / in Uncategorized

Original release date: May 18, 2022 Summary The Cybersecurity and Infrastructure Security Agency (CISA) is releasing this Cybersecurity Advisory (CSA) to warn organizations that malicious cyber actors, likely advanced persistent threat (APT) actors, are exploiting CVE-2022-22954 and CVE-2022-22960 separately and in combination. These vulnerabilities affect certain versions of VMware Workspace ONE Access, VMware Identity Manager…

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AA22-138A: Threat Actors Exploiting F5 BIG-IP CVE-2022-1388

May 18, 2022 / in Uncategorized

Original release date: May 18, 2022 Summary Actions for administrators to take today: • Do not expose management interfaces to the internet. • Enforce multi-factor authentication. • Consider using CISA’s Cyber Hygiene Services. The Cybersecurity and Infrastructure Security Agency (CISA) and the Multi-State Information Sharing & Analysis Center (MS-ISAC) are releasing this joint Cybersecurity Advisory…

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AA22-137A: Weak Security Controls and Practices Routinely Exploited for Initial Access

May 17, 2022 / in Uncategorized

Original release date: May 17, 2022 Summary Best Practices to Protect Your Systems: • Control access. • Harden Credentials. • Establish centralized log management. • Use antivirus solutions. • Employ detection tools. • Operate services exposed on internet-accessible hosts with secure configurations. • Keep software updated. Cyber actors routinely exploit poor security configurations (either misconfigured…

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AA22-131A: Protecting Against Cyber Threats to Managed Service Providers and their Customers

May 11, 2022 / in Uncategorized

Original release date: May 11, 2022 Summary Tactical actions for MSPs and their customers to take today: • Identify and disable accounts that are no longer in use. • Enforce MFA on MSP accounts that access the customer environment and monitor for unexplained failed authentication. • Ensure MSP-customer contracts transparently identify ownership of ICT security…

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AA22-117A: 2021 Top Routinely Exploited Vulnerabilities

Apr 27, 2022 / in Uncategorized

Original release date: April 27, 2022 Summary This joint Cybersecurity Advisory (CSA) was coauthored by cybersecurity authorities of the United States, Australia, Canada, New Zealand, and the United Kingdom: the Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), Federal Bureau of Investigation (FBI), Australian Cyber Security Centre (ACSC), Canadian Centre for Cyber Security…

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AA22-110A: Russian State-Sponsored and Criminal Cyber Threats to Critical Infrastructure

Apr 20, 2022 / in Uncategorized

Original release date: April 20, 2022 Summary Actions critical infrastructure organizations should implement to immediately protect against Russian state-sponsored and criminal cyber threats: • Patch all systems. Prioritize patching known exploited vulnerabilities. • Enforce multifactor authentication. • Secure and monitor Remote Desktop Protocol and other risky services. • Provide end-user awareness and training. The cybersecurity…

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