Remote code execution in Adobe Type Manager Library in Microsoft Windows

Published: 2020-03-23 | Updated: 2020-04-14

Risk	Critical
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-1020 CVE-2020-0938
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	Vulnerability #1 is being exploited in the wild. Vulnerability #2 is being exploited in the wild.
Vulnerable software Subscribe	Windows Operating systems & Components / Operating system Windows Server Operating systems & Components / Operating system
Vendor	Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

Updated: 14.04.2020

Updated vulnerability description, assigned CVE-IDs, changed bulletin status to patched.

1) Buffer overflow

EUVDB-ID: #VU26322

Risk: Critical

CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:H/RL:U/RC:C]

CVE-ID: CVE-2020-1020

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: Yes

Description

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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7 - 10 1909

Windows Server: 2008 - 2019 1909

CPE2.3