CVE-2023-28261: Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability

Overview

Severity
Medium (CVSS 5.7)
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
Category
Edge - Chromium
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2023-Mar
Released
2023-03-24
Last Updated
2023-08-01
EPSS Score
0.17% (percentile: 38.9%)

FAQ

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires an attacker to win a race condition and also to take additional actions prior to exploitation to prepare the target environment. What privileges could be gained by an attacker who successfully exploited the vulnerability? A domain user could use this vulnerability to elevate privileges to SYSTEM assigned integrity level. According to the CVSS metrics, the attack vector is local (AV:L). What does that mean for this vulnerability? An attacker must have loaded the malicious executable onto the victim's machine through social engineering first. The execution of the attack itself only occurs on the victim's local machine with no network access required. According to the CVSS metric, successful exploitation of this vulnerability could lead to no loss of availability (A:N)? What does that mean for this vulnerability? An attacker cannot impact the availability of the browser. 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 who successfully exploited the vulnerability could have limited ability to perform code execution. What is the version information for this release? Microsoft Edge Channel Microsoft Edge Version Based on Chromium Version Date Released Stable 111.0.1661.54 111.0.5563.110/.111 3/23/2023 Extended Stable 110.0.1587.78 110.0.5481.208 3/23/2023

Affected Products (2)

Browser

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

Acknowledgments

<a href="https://github.com/kohnakagawa">Koh M. Nakagawa</a> with <a href="https://www.ffri.jp/en/index.htm">FFRI Security, Inc.</a>

Revision History

  • 2023-03-24: Information published.
  • 2023-06-16: Updated one or more CVSS scores for the affected products. This is an informational change only.
  • 2023-08-01: 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.