Compliance Impact

I don't know

Useful 0 Not Useful 0

Executive Summary

CVE-2026-3066 is a critical command injection vulnerability found in HummerRisk versions up to 1.5.0, specifically in its cloud compliance scanning functionality.

The flaw exists in the function fixedCommand within the PlatformUtils.java file, where user-supplied inputs such as cloud account configuration fields (e.g., region, proxy settings, credentials) are concatenated directly into shell commands without proper validation or sanitization.

An authenticated attacker can inject arbitrary shell commands into these fields, which are then executed with the privileges of the HummerRisk application during compliance scans, leading to remote code execution.

This vulnerability allows attackers to execute arbitrary commands on the server, steal multi-cloud credentials, and potentially compromise the entire cloud infrastructure managed by the application.

Useful 0 Not Useful 0

Impact Analysis

This vulnerability can have severe impacts including:

• Confidentiality: Attackers can exfiltrate cloud credentials, gaining unauthorized access to cloud resources such as virtual machines, storage, and databases across multiple cloud providers.
• Integrity: Attackers can modify cloud security groups, IAM policies, resource configurations, inject malicious code into cloud applications, and manipulate or delete critical data.
• Availability: Attackers can disrupt cloud infrastructure by deleting resources, exhausting quotas, or causing denial of service.
• Authentication Bypass: Stolen credentials allow persistent unauthorized access even after patching.
• Lateral Movement: Attackers can pivot across cloud services and hybrid environments, compromising CI/CD pipelines and enabling supply chain attacks.

Useful 0 Not Useful 0

Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring for unusual command executions or suspicious activity related to cloud compliance scanning operations in HummerRisk. Since the vulnerability involves command injection through cloud account configuration fields, detection can focus on identifying unexpected shell commands being executed by the HummerRisk application.'}, {'type': 'paragraph', 'content': 'Specifically, commands that check for unauthorized or suspicious shell commands executed by the HummerRisk process or unusual network connections initiated by it may help detect exploitation attempts.'}, {'type': 'list_item', 'content': 'Use process monitoring tools (e.g., ps, top) to identify unexpected commands or processes spawned by HummerRisk.'}, {'type': 'list_item', 'content': 'Check logs for execution of shell commands related to cloud compliance scans.'}, {'type': 'list_item', 'content': 'Use network monitoring tools (e.g., netstat, tcpdump) to detect unusual outbound connections from the HummerRisk server, which may indicate command injection exploitation such as reverse shells or data exfiltration.'}, {'type': 'list_item', 'content': 'Example commands to detect suspicious activity:'}, {'type': 'list_item', 'content': 'ps aux | grep hummerrisk'}, {'type': 'list_item', 'content': 'netstat -anp | grep hummerrisk'}, {'type': 'list_item', 'content': "grep -iE 'curl|wget|nc|bash' /var/log/hummerrisk.log"}, {'type': 'list_item', 'content': 'auditctl -w /path/to/hummerrisk -p x -k hummerrisk_exec'}] [1, 3]

Useful 0 Not Useful 0

Mitigation Strategies

Immediate mitigation steps include restricting or disabling the vulnerable functionality in HummerRisk, especially the cloud compliance scanning feature that uses the fixedCommand function.

Since no official patch or vendor response is available, it is recommended to replace or upgrade the affected product to a secure alternative if possible.

Additional mitigation measures include:

• Implement strict input validation and whitelisting on all cloud configuration parameters to prevent injection of shell commands.
• Enforce regex patterns for fields such as AWS regions and proxy settings to block malicious inputs.
• Limit privileges of the HummerRisk application to minimize impact if exploited.
• Monitor and audit logs and network traffic for signs of exploitation.
• Consider isolating the HummerRisk server from critical infrastructure and sensitive cloud credentials.

Useful 0 Not Useful 0