Apr 2020:
CVE-2020-1020 Published on April 15, 2020

A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Adobe Font Manager Library Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0938.

NVD

Known Exploited Vulnerability

This Microsoft Windows Type 1 Font Parsing Remote Code Execution Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format. This CVE ID is unique from CVE-2020-0938.

The following remediation steps are recommended / required by May 3, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2020-1020 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Memory Corruption Vulnerability?

The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.

CVE-2020-1020 has been classified to as a Memory Corruption vulnerability or weakness.


Products Associated with CVE-2020-1020

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-1020 are published in these products:

Microsoft Windows 10
 
Microsoft Windows 7
 
Microsoft Windows 8.1
 
Microsoft Windows Rt 8 1
 
Microsoft Windows Server 2008
 
Microsoft Windows Server 2012
 
Microsoft Windows Server 2016
 
Microsoft Windows Server 2019
 
Microsoft Windows 10 1507
 
Microsoft Windows Server 1903
 
Microsoft Windows Server 1909
 
Microsoft Windows 10 1803
 
Microsoft Windows 10 1909
 
Microsoft Windows 10 1709
 
Microsoft Windows 10 1903
 
Microsoft Windows
 
Microsoft Windows Server
 

Affected Versions

Microsoft Windows: Microsoft Windows Server: Microsoft Windows 10 Version 1909 for 32-bit Systems: Microsoft Windows 10 Version 1909 for x64-based Systems: Microsoft Windows 10 Version 1909 for ARM64-based Systems: Microsoft Windows Server, version 1909 (Server Core installation): Microsoft Windows 10 Version 1903 for 32-bit Systems: Microsoft Windows 10 Version 1903 for x64-based Systems: Microsoft Windows 10 Version 1903 for ARM64-based Systems: Microsoft Windows Server, version 1903 (Server Core installation):

Exploit Probability

EPSS
87.98%
Percentile
99.47%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.