CVE-2022-30192: Microsoft Edge Chromium Privilege Escalation

CVE-2022-30192 Overview

CVE-2022-30192 is an Elevation of Privilege vulnerability affecting Microsoft Edge (Chromium-based). This vulnerability allows an attacker to escalate privileges within the browser context, potentially gaining elevated access beyond normal user permissions. The attack requires user interaction and network access, making it a sophisticated threat that could compromise confidentiality, integrity, and availability of affected systems.

Critical Impact

Successful exploitation could allow attackers to escape browser sandboxing or gain elevated privileges, potentially leading to full system compromise through a changed scope impact affecting resources beyond the vulnerable component.

Affected Products

• Microsoft Edge (Chromium-based) - versions prior to the security patch
• microsoft edge_chromium (all vulnerable versions matching cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*)
• Systems running Gentoo Linux with affected Edge/Chromium packages (see GLSA 202208-25)

Discovery Timeline

• June 29, 2022 - CVE-2022-30192 published to NVD
• January 2, 2025 - Last updated in NVD database

Technical Details for CVE-2022-30192

Vulnerability Analysis

This Elevation of Privilege vulnerability in Microsoft Edge (Chromium-based) enables attackers to gain higher-level permissions than normally authorized. The vulnerability requires network access and user interaction to exploit, indicating that a victim must be lured to a malicious webpage or interact with attacker-controlled content for successful exploitation.

The scope change indicator in the vulnerability assessment suggests that successful exploitation can impact resources beyond the vulnerable browser component itself, potentially affecting the underlying operating system or other applications. This cross-boundary impact elevates the severity of the vulnerability significantly.

The attack complexity is high, meaning specific conditions must be met for successful exploitation, which may include timing factors, environmental prerequisites, or the need to gather target-specific information. However, no privileges are required to initiate the attack, lowering the barrier for initial access.

Root Cause

The exact technical root cause has not been publicly disclosed by Microsoft (classified as NVD-CWE-noinfo). Elevation of Privilege vulnerabilities in Chromium-based browsers typically arise from sandbox escape conditions, improper permission checks in inter-process communication (IPC), or flaws in the privilege separation model between renderer and browser processes. The vulnerability may involve improper handling of trust boundaries within the browser architecture.

Attack Vector

The attack vector is network-based, requiring the attacker to deliver malicious content to the victim's browser. The exploitation scenario likely involves:

1. An attacker crafts a malicious webpage or web content designed to trigger the vulnerability
2. The victim visits the malicious site or interacts with attacker-controlled content (user interaction required)
3. The exploit code executes within the browser context
4. Upon successful exploitation, the attacker gains elevated privileges, potentially escaping the browser sandbox
5. The changed scope allows impact to resources beyond the browser, such as the host operating system

The high attack complexity indicates that exploitation is not trivial and may require specific browser configurations or environmental conditions.

Detection Methods for CVE-2022-30192

Indicators of Compromise

• Unusual child processes spawned by Microsoft Edge with elevated privileges
• Unexpected IPC activity or sandbox escape attempts from browser processes
• Anomalous system calls or API usage patterns originating from msedge.exe
• Browser crash dumps indicating exploitation attempts against privilege boundaries

Detection Strategies

• Monitor for unexpected privilege escalation events associated with Microsoft Edge processes
• Implement browser process behavior monitoring to detect sandbox escape attempts
• Deploy endpoint detection rules that alert on unusual parent-child process relationships involving msedge.exe
• Review Windows Security Event logs for anomalous token manipulation or privilege changes related to browser processes

Monitoring Recommendations

• Enable enhanced logging for browser process activities and IPC communications
• Utilize SentinelOne's behavioral AI to detect anomalous browser behavior patterns indicating exploitation
• Configure alerts for processes attempting to access resources outside normal browser scope
• Monitor network traffic for connections to known malicious infrastructure following browser compromise indicators

How to Mitigate CVE-2022-30192

Immediate Actions Required

• Update Microsoft Edge (Chromium-based) to the latest patched version immediately
• Review and apply the Microsoft Security Advisory for CVE-2022-30192
• Gentoo Linux users should apply the patches referenced in GLSA 202208-25
• Educate users about the risks of visiting untrusted websites while the patch is being deployed
• Consider temporarily restricting browser usage on critical systems until patching is complete

Patch Information

Microsoft has released a security update addressing this vulnerability. Administrators should obtain the official patch from the Microsoft Security Update Guide. The update should be deployed through standard Microsoft Edge update channels or enterprise software deployment tools.

For Gentoo Linux systems, refer to the Gentoo Linux Security Advisory GLSA 202208-25 for distribution-specific patching instructions.

Verify the installed Edge version after patching to ensure the update was applied successfully. Microsoft Edge typically auto-updates, but enterprise environments with managed update policies should verify deployment completion.

Workarounds

• Restrict access to untrusted websites using web filtering or proxy policies while awaiting patch deployment
• Enable Enhanced Security Mode in Microsoft Edge to add additional exploitation mitigations
• Consider deploying browser isolation solutions for high-risk users or critical systems
• Implement strict Content Security Policy headers on internal web applications to reduce attack surface
• Monitor and restrict browser extensions that could be leveraged as part of an attack chain

# Verify Microsoft Edge version (Windows PowerShell)
# Ensure version is updated past the vulnerable release
Get-ItemProperty "HKLM:\SOFTWARE\Microsoft\Edge" | Select-Object version

# Force Edge update check via command line
start msedge://settings/help