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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