CVE-2019-6737
📋 TL;DR
This vulnerability in Bitdefender SafePay allows remote attackers to execute arbitrary code by tricking users into visiting malicious web pages or opening malicious files. The flaw exists in the TIScript processing component's openFile method, enabling arbitrary file writes with attacker-controlled data. Users of vulnerable Bitdefender SafePay installations are affected.
💻 Affected Systems
- Bitdefender SafePay
📦 What is this software?
Safepay by Bitdefender
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the affected system, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Attacker executes malicious code in the context of the SafePay process, potentially stealing sensitive financial data, browser credentials, or installing additional malware.
If Mitigated
If proper controls like application whitelisting and least privilege are in place, impact is limited to the SafePay application's capabilities and user context.
🎯 Exploit Status
Exploitation requires user interaction but is straightforward once the user visits a malicious page. The vulnerability was discovered by Zero Day Initiative (ZDI-CAN-7247).
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to version newer than 23.0.10.34
Vendor Advisory: https://www.bitdefender.com/support/security-advisories/bitdefender-safepay-openfile-arbitrary-file-write-remote-code-execution-vulnerability/
Restart Required: Yes
Instructions:
1. Open Bitdefender application. 2. Navigate to Update section. 3. Check for and install available updates. 4. Restart the system if prompted. 5. Verify SafePay is updated to latest version.
🔧 Temporary Workarounds
Disable SafePay Browser
windowsTemporarily disable Bitdefender SafePay browser until patched
Open Bitdefender interface > Protection > Online Threat Prevention > Disable SafePay
Network Restriction
allBlock SafePay from accessing untrusted websites via firewall or proxy
🧯 If You Can't Patch
- Uninstall Bitdefender SafePay component entirely
- Implement application control/whitelisting to prevent unauthorized code execution
🔍 How to Verify
Check if Vulnerable:
Check SafePay version in Bitdefender interface under About section. If version is 23.0.10.34 or earlier, system is vulnerable.Check Version:
In Bitdefender interface: Help > About or check program files versionVerify Fix Applied:
Verify SafePay version is newer than 23.0.10.34. Check that updates are enabled and automatic.📡 Detection & Monitoring
Log Indicators:
- Unusual SafePay process behavior
- File writes to unexpected locations by SafePay
- Network connections from SafePay to suspicious domains
Network Indicators:
- SafePay connecting to non-banking/financial websites
- Unusual outbound traffic patterns from SafePay process
SIEM Query:
process_name:"safepay.exe" AND (file_write:* OR network_connection:* AND NOT destination_domain:banking_domains)🔗 References
- https://www.bitdefender.com/support/security-advisories/bitdefender-safepay-openfile-arbitrary-file-write-remote-code-execution-vulnerability/
- https://www.zerodayinitiative.com/advisories/ZDI-19-158/
- https://www.bitdefender.com/support/security-advisories/bitdefender-safepay-openfile-arbitrary-file-write-remote-code-execution-vulnerability/
- https://www.zerodayinitiative.com/advisories/ZDI-19-158/
