CVE-2020-1433: Microsoft Edge PDF Information Disclosure Vulnerability
Overview
- Severity
- Medium (CVSS 4.3)
- CVSS Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
- Category
- Information Disclosure
- Exploit Status
- Not Exploited
- Exploitation Likelihood
- Less Likely
- Patch Tuesday
- 2020-Jul
- Released
- 2020-07-14
- EPSS Score
- 25.32% (percentile: 96.2%)
Description
An information disclosure vulnerability exists when Microsoft Edge PDF Reader improperly handles objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.
To exploit the vulnerability, in a web-based attack scenario, an attacker could host a website that contains malicious PDF content. In addition, compromised websites and websites that accept or host user-provided content could contain specially crafted PDF content that could exploit the vulnerability. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker's site.
The security update addresses the vulnerability by modifying how Microsoft Edge PDF Reader handles objects in memory.
FAQ
What type of information could be disclosed by this vulnerability?
The type of information that could be disclosed if an attacker successfully exploited this vulnerability is memory layout - the vulnerability allows an attacker to collect information that facilitates predicting addressing of the memory.
Affected Products (24)
Browser
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 2004 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1803 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1809 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows Server 2019
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1909 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1709 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1903 for ARM64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for 32-bit Systems
- Microsoft Edge (EdgeHTML-based) on Windows 10 Version 1607 for x64-based Systems
- Microsoft Edge (EdgeHTML-based) on Windows Server 2016
Security Updates (7)
Acknowledgments
Zhangjie and willJ
Revision History
- 2020-07-14: Information published.