Buffer overflow in Microsoft Windows and Windows Server - CVE-2020-1020

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the Windows Adobe Type Manager Library when parsing a specially-crafted multi-master font - Adobe Type 1 PostScript format. A remote attacker can create a specially crafted document, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, this vulnerability is being actively exploited in the wild.

Affected software

How to mitigate CVE-2020-1020

Links to Public Exploits and PoC-codes

• Exploit #6616 - CVE-2020-1020 (Windows Font Driver Type 1 VToHOrigin stack corruption) (August 11, 2021)
• Exploit #6609 - CVE-2020-1020-Exploit () (August 9, 2021)
• Exploit #5426 - CVE-2020-1020-Exploit () (May 18, 2021)

External References

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/ADV200006
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1020

Related Security Bulletins

• Remote code execution in Adobe Type Manager Library in Microsoft Windows
• Multiple vulnerabilities in Dell EMC Unisphere for PowerMax and Dell EMC Solutions Enabler