CVE-2023-35618: Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Overview

Severity
Critical (CVSS 9.6)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Edge - Chromium
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2023-Dec
Released
2023-12-07
Last Updated
2023-12-14
EPSS Score
0.48% (percentile: 64.9%)

FAQ

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file that is designed to exploit the vulnerability. However, an attacker would have no way to force the user to visit the website. Instead, an attacker would have to convince the user to click a link, typically by way of an enticement in an email or Instant Messenger message, and then convince the user to open the specially crafted file. Why is the severity for this CVE rated as Moderate, but the CVSS score is higher than normal? Per our severity guidelines, the amount of user interaction or preconditions required to allow this sort of exploitation downgraded the severity, specifically it says, "If a bug requires more than a click, a key press, or several preconditions, the severity will be downgraded". The CVSS scoring system doesn't allow for this type of nuance. What privileges could be gained by an attacker who successfully exploited the vulnerability? An attacker who successfully exploited this vulnerability could allow the attacker to gain the privileges needed to perform code execution. According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability? This vulnerability could lead to a browser sandbox escape. What is the version information for this release? Microsoft Edge Version Date Released Based on Chromium Version 120.0.2210.61 12/7/2023 120.0.6099.62/.63

Affected Products (1)

Browser

  • Microsoft Edge (Chromium-based)

Acknowledgments

Anonymous

Revision History

  • 2023-12-07: Information published.
  • 2023-12-14: Added FAQ to indicate the version numbers for this CVE. This is an informational change only.