CVE-2020-6575
📋 TL;DR
This vulnerability is a race condition in Chrome's Mojo IPC system that allows an attacker who has already compromised the renderer process to potentially escape the browser sandbox. It affects Chrome users on all platforms. Successful exploitation could lead to full system compromise.
💻 Affected Systems
- Google Chrome
📦 What is this software?
Backports Sle by Opensuse
Backports Sle by Opensuse
Chrome by Google
Google Chrome is the world's most popular web browser, used by over 3 billion users globally across Windows, macOS, Linux, Android, and iOS platforms. As a Chromium-based browser developed by Google, Chrome dominates the browser market with approximately 65% market share, making it a critical compon...
Learn more about Chrome →Fedora by Fedoraproject
Fedora by Fedoraproject
Leap by Opensuse
Leap by Opensuse
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the victim's machine, allowing installation of malware, data theft, and persistence.
Likely Case
Sandbox escape leading to arbitrary code execution with system-level privileges, enabling further attacks on the host system.
If Mitigated
Limited to renderer process compromise only, with sandbox preventing system-level access.
🎯 Exploit Status
Requires chaining with another vulnerability to first compromise renderer process. Race conditions are difficult to exploit reliably.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 85.0.4183.102 and later
Vendor Advisory: https://chromereleases.googleblog.com/2020/09/stable-channel-update-for-desktop.html
Restart Required: Yes
Instructions:
1. Open Chrome browser. 2. Click menu (three dots) → Help → About Google Chrome. 3. Browser will automatically check for and install updates. 4. Click 'Relaunch' when prompted to complete update.
🔧 Temporary Workarounds
Disable JavaScript
allPrevents execution of malicious JavaScript that could trigger the vulnerability
Use Chrome Enterprise policies
allConfigure Chrome via group policy to auto-update and restrict untrusted sites
🧯 If You Can't Patch
- Use alternative browser that is not vulnerable
- Implement network filtering to block access to untrusted websites
🔍 How to Verify
Check if Vulnerable:
Check Chrome version: If version is below 85.0.4183.102, system is vulnerable.Check Version:
chrome://version/ or 'google-chrome --version' on LinuxVerify Fix Applied:
Verify Chrome version is 85.0.4183.102 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Chrome crash reports with sandbox violation indicators
- Unusual process creation from Chrome processes
Network Indicators:
- Requests to known exploit hosting domains
- Unusual outbound connections from Chrome
SIEM Query:
process_name:chrome.exe AND (parent_process:chrome.exe OR command_line:*sandbox*)🔗 References
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00078.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00081.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00049.html
- https://chromereleases.googleblog.com/2020/09/stable-channel-update-for-desktop.html
- https://crbug.com/1081874
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FN7HZIGAOCZKBT4LV363BCPRA5FLY25I/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNIYFJST4TFJYFZ27VODBOINCLBGULTD/
- https://security.gentoo.org/glsa/202101-30
- https://www.debian.org/security/2021/dsa-4824
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00072.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00078.html
- http://lists.opensuse.org/opensuse-security-announce/2020-09/msg00081.html
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00049.html
- https://chromereleases.googleblog.com/2020/09/stable-channel-update-for-desktop.html
- https://crbug.com/1081874
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FN7HZIGAOCZKBT4LV363BCPRA5FLY25I/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GNIYFJST4TFJYFZ27VODBOINCLBGULTD/
- https://security.gentoo.org/glsa/202101-30
- https://www.debian.org/security/2021/dsa-4824
