CVE-2023-24892: Microsoft Edge (Chromium-based) Webview2 Spoofing Vulnerability

Overview

Severity
High (CVSS 8.2)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C
Category
Edge - Chromium
Exploit Status
Not Exploited
Exploitation Likelihood
Unlikely
Patch Tuesday
2023-Mar
Released
2023-03-14
Last Updated
2023-05-16
EPSS Score
8.03% (percentile: 92.1%)

FAQ

According to the CVSS metric, successful exploitation of this vulnerability could lead to some loss of integrity (I:L)? What does that mean for this vulnerability? The attacker is only able to modify the content of the vulnerable link to redirect the victim to a malicious site. According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? The user would have to click on a specially crafted URL to be compromised by the attacker. According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? A user could be tricked into entering credentials or responding to a pop up after opening a specially crafted file or clicking on a link, typically by way of an enticement in an email or URL. According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? The vulnerability is in the web server, but the malicious scripts execute in the victim’s browser on their machine. According to the CVSS metric, successful exploitation of this vulnerability could lead to total loss of confidentiality (C:H)? What does that mean for this vulnerability? An attacker who successfully exploited the vulnerability could use the WebView2 API to leak login credentials.

Affected Products (1)

Browser

  • Microsoft Edge (Chromium-based)

Acknowledgments

Markus Zühlke-Taczkowski

Revision History

  • 2023-03-14: Information published.
  • 2023-05-09: Updated one or more CVSS scores for the affected products and added an FAQ explaining the vector string settings. This is an informational change only.
  • 2023-05-16: Added FAQ information. This is an informational change only.