CVE-2023-36027: Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Overview

Severity
High (CVSS 7.1)
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L/E:U/RL:O/RC:C
Category
Elevation of Privilege
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2023-Nov
Released
2023-11-10
EPSS Score
0.14% (percentile: 33.5%)

FAQ

What is the version information for this release? Microsoft Edge Channel Microsoft Edge Version Date Released Based on Chromium Version Stable 119.0.2151.58 11/09/2023 119.0.6045.123/.124 Extended Stable 118.0.2088.102 11/09/2023 118.0.5993.136 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 metrics, successful exploitation of this vulnerability could lead to minor loss of confidentiality (C:L), integrity (I:L) and availability (A:L). What does that mean for this vulnerability? While we cannot rule out the impact to Confidentiality, Integrity, and Availability, the ability to exploit this vulnerability by itself is limited. An attacker would need to combine this with other vulnerabilities to perform an attack. How could an attacker exploit this vulnerability? To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system. Additionally, an attacker could convince a local user to open a malicious file. The attacker would have to convince the user to click a link, typically by way of an enticement in an email or instant message, and then convince them 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.

Affected Products (2)

Browser

  • Microsoft Edge (Chromium-based)
  • Microsoft Edge (Chromium-based) Extended Stable

Acknowledgments

Anonymous

Revision History

  • 2023-11-10: Information published.