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Sep 28, 2021
UPDATE: Critical VMware vCenter Vulnerability
THE THREAT UPDATE: Exploitation of CVE-2021-22005 has been identified in the wild. Fully functional Proof-of-Concept (PoC) exploit code for CVE-2021-22005 was publicly released on September 27th. The release of PoC code is expected to result in widespread exploitation of the vulnerability in the immediate future. Organizations need to ensure that either the VMware security patches, or temporary…
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eSentire Launches MDR with Microsoft Azure Sentinel Extending Response Capabilities Across Entire Microsoft Security Ecosystem
Waterloo, ON – Oct. 12, 2021 -- eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announced the expansion of its award-winning MDR services with Microsoft Azure Sentinel, as part of its integration with the complete Microsoft 365 Defender and Azure Defender product suites supporting Microsoft SIEM, endpoint, identity, email and cloud security services.…
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Security advisories — Apr 13, 2021

Microsoft Exchange Vulnerabilities Announced 

THE THREAT

On April 13th, Microsoft released its monthly bundle of security patches. Notably, this release includes four vulnerabilities impacting multiple versions of Microsoft on-premise Exchange Servers. All Exchange vulnerabilities received a rating of critical and could allow attackers to execute code on remote Exchange servers. Exploitation may allow persistent access and control of enterprise networks.

Exploitation in the wild has not been identified at this time. These vulnerabilities are considered “Exploitation More Likely” by Microsoft. The criticality of these vulnerabilities and the potential value of Exchange server exploits increases the likelihood of exploitation in the near future. Organizations are strongly recommended to apply the relevant security patches as soon as possible.

What we’re doing about it

What you should do about it

Additional information

All four of these vulnerabilities were discovered and reported to Microsoft by the National Security Agency (NSA). Two of the vulnerabilities (CVE-2021-28480, CVE-2021-28481) are remotely exploitable without authentication. Exploits for these vulnerabilities will be highly valuable to adversaries. Mitigating these vulnerabilities before exploits become available is critical.

Exchange Vulnerabilities:

Impacted Products:

References:

[1] https://msrc-blog.microsoft.com/2021/04/13/april-2021-update-tuesday-packages-now-available/

[2] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28480

[3] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28481

[4] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28482

[5] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28483