CVE-2024-7523
📋 TL;DR
This vulnerability allows malicious websites to partially obscure security permission prompts in Firefox for Android, potentially tricking users into granting unintended permissions. Only affects Firefox versions below 129 on Android devices.
💻 Affected Systems
- Firefox for Android
📦 What is this software?
Firefox by Mozilla
⚠️ Risk & Real-World Impact
Worst Case
Users could be tricked into granting camera, microphone, location, or other sensitive permissions to malicious websites, leading to privacy violations and potential credential theft.
Likely Case
Malicious sites could obtain limited permissions through social engineering, potentially accessing location data or device features without user awareness.
If Mitigated
With user awareness training and prompt scrutiny, users would notice obscured prompts and deny suspicious permission requests.
🎯 Exploit Status
Exploitation requires user interaction (clicking on obscured prompts) but is technically simple for attackers to implement.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firefox 129
Vendor Advisory: https://www.mozilla.org/security/advisories/mfsa2024-33/
Restart Required: Yes
Instructions:
1. Open Google Play Store 2. Search for Firefox 3. Update to version 129 or higher 4. Restart Firefox after update
🔧 Temporary Workarounds
Disable automatic permission grants
androidConfigure Firefox to always ask for permissions instead of remembering previous choices
Use alternative browser temporarily
androidSwitch to a non-vulnerable browser until Firefox is updated
🧯 If You Can't Patch
- Educate users to carefully inspect permission prompts before granting access
- Implement network filtering to block known malicious websites
🔍 How to Verify
Check if Vulnerable:
Check Firefox version in Settings > About Firefox. If version is below 129, device is vulnerable.Check Version:
Open Firefox > Settings > About FirefoxVerify Fix Applied:
Confirm Firefox version is 129 or higher in Settings > About Firefox.📡 Detection & Monitoring
Log Indicators:
- Unusual permission grant patterns from Firefox browser
Network Indicators:
- Connections to suspicious domains requesting multiple permissions
SIEM Query:
firefox AND (permission_grant OR prompt_accept) AND version<129