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Nov 22, 2021
Microsoft Exchange Vulnerability - CVE-2021-42321
THE THREAT eSentire has identified publicly available Proof-of-Concept (PoC) exploit code, for the critical Microsoft Exchange vulnerability CVE-2021-42321. CVE-2021-42321 was announced as part of Microsoft’s November Patch Tuesday release. Exploitation would allow a remote threat actor, with previous authentication, to execute code on vulnerable servers. Prior to the patch release, Microsoft…
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Oct 28, 2021
Telarus and eSentire Expand Partnership to Safeguard Enterprises Globally Against Business Disrupting Ransomware and Zero-Day Attacks
London, UK and Sydney, Australia– Oct. 28, 2021 - eSentire, recognized globally as the Authority in Managed Detection and Response (MDR), today announces the expansion of its partnership with Telarus, the largest privately-held distributor of business cloud infrastructure and contact centre services. Building on their mutual success across North America, Telarus will bring eSentire’s Managed…
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Security advisories — Mar 24, 2020

Windows RCE Zero-Days Announced

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THE THREAT

Update 2020/04/16: On April 14, 2020, Microsoft released security patches for both of the vulnerabilities mentioned in this advisory (CVE-2020-0938, CVE-2020-1020). After performing a business impact review, organizations should apply the latest Microsoft security patches to avoid impact.

Microsoft has announced two un-patched vulnerabilities affecting all supported versions of Windows and Windows Servers [1]. Limited attacks exploiting the vulnerabilities have been identified in the wild. If exploited, a remote and unauthenticated attacker could execute code on vulnerable systems. Successful exploitation could lead to the full compromise of targeted devices. Microsoft is actively developing a security patch for these vulnerabilities; once released, applying the patches should be high priority for organizations.

What we’re doing about it

What you should do about it

Additional information

The vulnerabilities reside in the Windows Adobe Type Manager Library and affects all supported Windows versions including:

In order to exploit this vulnerability, threat actors would need to convince the victim to view a maliciously crafted document. Attacks employing this vulnerability are likely email based, increasing the importance of user awareness and email security.

Attacks exploiting this vulnerability in the wild have been limited and targeted in nature; at the time of writing, Windows 10 machines have not been a part of this activity [1].

Official CVE numbers for these vulnerabilities have not been made public at this time.

References:

[1] https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/adv200006

[2] https://digitalguardian.com/blog/what-email-security-data-protection-101

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