CVE-2019-8075
📋 TL;DR
CVE-2019-8075 is a Same Origin Policy bypass vulnerability in Adobe Flash Player that allows malicious websites to access data from other domains. This affects users running Adobe Flash Player version 32.0.0.192 or earlier. Successful exploitation could lead to information disclosure of sensitive data within the current user's context.
💻 Affected Systems
- Adobe Flash Player
📦 What is this software?
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 →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
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal sensitive user data (cookies, session tokens, personal information) from other websites the user is logged into, potentially leading to account takeover and further compromise.
Likely Case
Malicious websites could extract limited user data from other domains, potentially exposing session information or personal details that could be used for targeted attacks.
If Mitigated
With proper controls like disabling Flash or using modern browsers with Flash disabled by default, the impact is minimal as the attack vector is eliminated.
🎯 Exploit Status
Exploitation requires user interaction (visiting a malicious website) but the technical complexity is low. The vulnerability bypasses browser security controls.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 32.0.0.207 and later
Vendor Advisory: https://helpx.adobe.com/security/products/flash-player/apsb19-30.html
Restart Required: Yes
Instructions:
1. Update Adobe Flash Player to version 32.0.0.207 or later. 2. For Chrome/Chromium users, update to version 87.0.4280.66 or later. 3. Restart the browser after updating.
🔧 Temporary Workarounds
Disable Adobe Flash Player
allCompletely disable Flash Player in browser settings to eliminate the attack vector.
Browser-specific: In Chrome, type chrome://settings/content/flash and disable. In Firefox, type about:addons, select Plugins, set Flash to 'Never Activate'.
Use Click-to-Play
allConfigure Flash to require user permission before running on websites.
Browser-specific: In Chrome, type chrome://settings/content/flash and enable 'Ask first'. In Firefox, type about:addons, select Plugins, set Flash to 'Ask to Activate'.
🧯 If You Can't Patch
- Disable Adobe Flash Player completely in all browsers
- Use browser extensions that block Flash content automatically
🔍 How to Verify
Check if Vulnerable:
Check Adobe Flash Player version. If version is 32.0.0.192 or earlier, the system is vulnerable.Check Version:
Windows: Open Control Panel > Flash Player > Advanced tab. macOS/Linux: Visit https://helpx.adobe.com/flash-player.html and click 'Check Now'.Verify Fix Applied:
Verify Adobe Flash Player version is 32.0.0.207 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual Flash Player crashes
- Multiple requests to Flash content from suspicious domains
- Security policy violation logs in browser
Network Indicators:
- Multiple cross-origin requests from Flash content
- Unusual data exfiltration patterns from Flash objects
SIEM Query:
source="browser" AND (event="flash_crash" OR event="security_violation") AND flash_version<="32.0.0.192"🔗 References
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html
- https://crbug.com/945997
- https://helpx.adobe.com/security/products/flash-player/apsb19-30.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AB2XOYF26EBHJEI6LXCBL32TGZM7UHQ4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW/
- https://www.debian.org/security/2021/dsa-4824
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_17.html
- https://crbug.com/945997
- https://helpx.adobe.com/security/products/flash-player/apsb19-30.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AB2XOYF26EBHJEI6LXCBL32TGZM7UHQ4/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW/
- https://www.debian.org/security/2021/dsa-4824
