CVE-2020-1432: Skype for Business via Internet Explorer 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
- 9.59% (percentile: 92.9%)
Description
An information disclosure vulnerability exists when Skype for Business is accessed via Internet Explorer. An attacker who exploited the vulnerability could cause the user to place a call without additional consent, leading to information disclosure of the user profile.
For the vulnerability to be exploited, a user must click a specially crafted URL that prompts the Skype app. In an email attack scenario, an attacker could exploit the vulnerability by sending an email message containing the specially crafted URL to the user and convincing the user to click the specially crafted URL.
The security update addresses the vulnerability by correcting how Internet Explorer handles URLs that are designed to use the Skype for Business app by requesting user permission before launching the app.
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 information such as Skype profile data, or other PII data of the end user.
Affected Products (32)
Browser
- Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 2004 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 2004 for ARM64-based Systems
- Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems
- Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems
- Internet Explorer 11 on Windows Server 2019
- Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems
- Internet Explorer 11 on Windows 10 Version 1709 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1709 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1709 for ARM64-based Systems
- Internet Explorer 11 on Windows 10 Version 1903 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1903 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1903 for ARM64-based Systems
- Internet Explorer 11 on Windows 10 for 32-bit Systems
- Internet Explorer 11 on Windows 10 for x64-based Systems
- Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems
- Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems
- Internet Explorer 11 on Windows Server 2016
- Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1
- Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1
- Internet Explorer 11 on Windows 8.1 for 32-bit systems
- Internet Explorer 11 on Windows 8.1 for x64-based systems
- Internet Explorer 11 on Windows RT 8.1
- Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
- Internet Explorer 11 on Windows Server 2012
- Internet Explorer 11 on Windows Server 2012 R2
Security Updates (11)
Acknowledgments
Firas Salem (Cybersecurity Researcher) with Metasudo
Revision History
- 2020-07-14: Information published.