CVE-2016-4404
📋 TL;DR
CVE-2016-4404 is a critical remote code execution vulnerability in HP KeyView's Filter SDK component. Attackers can exploit a memory allocation flaw to execute arbitrary code on affected systems. Organizations using HP KeyView versions earlier than 11.2 are vulnerable.
💻 Affected Systems
- HP KeyView
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the affected system, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Remote code execution allowing attackers to install malware, create backdoors, or exfiltrate sensitive data from vulnerable systems.
If Mitigated
Limited impact with proper network segmentation and endpoint protection blocking exploitation attempts.
🎯 Exploit Status
The vulnerability is remotely exploitable without authentication, making it relatively easy to weaponize once exploit details become public.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: HP KeyView v11.2 or later
Vendor Advisory: https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05325836
Restart Required: Yes
Instructions:
1. Download HP KeyView v11.2 or later from HP's official website. 2. Backup existing configurations. 3. Install the updated version following HP's installation guide. 4. Restart affected systems to ensure the patch is fully applied.
🔧 Temporary Workarounds
Disable Filter SDK processing
allTemporarily disable the vulnerable Filter SDK component to prevent exploitation
Specific commands depend on system configuration - consult HP documentation for component disablement procedures
Network segmentation
allIsolate systems running vulnerable HP KeyView versions from untrusted networks
🧯 If You Can't Patch
- Implement strict network access controls to limit exposure of vulnerable systems
- Deploy endpoint protection with memory protection and exploit prevention capabilities
🔍 How to Verify
Check if Vulnerable:
Check HP KeyView version using the application's about dialog or version command. Versions earlier than 11.2 are vulnerable.Check Version:
On Windows: Check Programs and Features or run 'wmic product get name,version' | findstr KeyView. On Linux: Check package manager or run 'rpm -qa | grep keyview' or 'dpkg -l | grep keyview'Verify Fix Applied:
Verify HP KeyView version is 11.2 or later and check that no error messages appear during document processing operations.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes in HP KeyView components
- Suspicious file processing activities
- Memory allocation errors in system logs
Network Indicators:
- Unusual outbound connections from systems running HP KeyView
- Network traffic to/from HP KeyView ports from unexpected sources
SIEM Query:
source="*keyview*" AND (event_type="crash" OR event_type="memory_error" OR process="*keyview*")🔗 References
- http://www.securityfocus.com/bid/94184
- http://www.securitytracker.com/id/1037235
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05325836
- http://www.securityfocus.com/bid/94184
- http://www.securitytracker.com/id/1037235
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-c05325836
