Apple has released security updates to address vulnerabilities in iOS 12.5.4. An attacker could exploit these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review the Apple security update and apply the necessary updates.
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CISA has released an Industrial Controls Systems (ICS) Medical Advisory on multiple vulnerabilities in the ZOLL Defibrillator Dashboard. A remote attacker could exploit some of these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review the ICS Medical Advisory ICSMA-21-161-01 and apply the recommended mitigations.
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Google has released Chrome version 91.0.4472.101 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system. One of these vulnerabilities—CVE-2021-30551—has been detected in exploits in the wild.
CISA encourages users and administrators to review the Chrome Release Note and apply the necessary updates.
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CISA has published the Rising Ransomware Threat to OT Assets fact sheet in response to the recent increase in ransomware attacks targeting operational technology (OT) assets and control systems. The guidance:
CISA encourages critical infrastructure (CI) owners and operators to review the Rising Ransomware Threat to OT Assets fact sheet as well as CISA’s Ransomware webpage to help them in reducing their CI entity’s vulnerability to ransomware.
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SAP has released security updates to address vulnerabilities affecting multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review the SAP Security Notes for June 2021 and apply the necessary updates.
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Adobe has released security updates to address vulnerabilities in multiple Adobe products. An attacker could exploit some of these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review Adobe’s Security Bulletins and apply the necessary updates.
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Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A remote attacker can exploit some of these vulnerabilities to take control of an affected system.
CISA encourages users and administrators to review Microsoft’s June 2021 Security Update Summary and Deployment Information and apply the necessary updates.
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CISA is aware of the likelihood that cyber threat actors are attempting to exploit CVE-2021-21985, a remote code execution vulnerability in VMware vCenter Server and VMware Cloud Foundation. Although patches were made available on May 25, 2021, unpatched systems remain an attractive target and attackers can exploit this vulnerability to take control of an unpatched system.
CISA encourages users and administrators to review VMware’s VMSA-2021-010, blogpost, and FAQ for more information about the vulnerability and apply the necessary updates as soon as possible, even if out-of-cycle work is required. If an organization cannot immediately apply the updates, then apply the workarounds in the interim.
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Cisco has released security updates to address vulnerabilities in multiple Cisco products. An attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page.
CISA encourages users and administrators to review the following Cisco advisories and apply the necessary updates:
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As part of an effort to encourage a common language in threat actor analysis, CISA has released Best Practices for MITRE ATT&CK® Mapping. The guide shows analysts—through instructions and examples—how to map adversary behavior to the MITRE ATT&CK framework. CISA created this guide in partnership with the Homeland Security Systems Engineering and Development Institute™ (HSSEDI), a DHS-owned R&D center operated by MITRE, which worked with the MITRE ATT&CK team.
CISA and other organizations in the cybersecurity community use MITRE ATT&CK to identify and analyze threat actor behavior. This analysis enables them to produce a set of mappings to develop adversary profiles; conduct activity trend analyses; and detect, respond to, and mitigate threats. An increase in the number of organizations integrating the ATT&CK framework in their analysis will have a positive impact on the efficiency and efficacy of information sharing within the community.
CISA, HSSEDI, and MITRE ATT&CK encourage users and administrators to review both the guide—as well as CISA Executive Assistant Director Eric Goldstein's blog post on the guide—to strengthen the security posture of their organization and improve information sharing.
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