CVE-2020-7620 in pomelo-monitor
Summary
by MITRE
pomelo-monitor through 0.3.7 is vulnerable to Command Injection.It allows injection of arbitrary commands as part of 'pomelo-monitor' params.
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Analysis
by VulDB Data Team • 05/13/2024
The pomelo-monitor vulnerability identified as CVE-2020-7620 represents a critical command injection flaw affecting versions through 0.3.7 of this monitoring tool. This vulnerability resides in the application's handling of user-supplied parameters within the monitoring framework, creating an avenue for malicious actors to execute arbitrary commands on the affected system. The flaw manifests when the application fails to properly sanitize or validate input parameters passed to the monitoring functionality, allowing attackers to inject malicious command sequences that get executed with the privileges of the monitoring process. This type of vulnerability falls under CWE-77 which specifically addresses command injection flaws in software systems.
The technical exploitation of this vulnerability occurs when an attacker can manipulate the parameters used by pomelo-monitor to execute system commands. The monitoring tool likely processes user input without adequate sanitization, allowing command separators such as semicolons, pipes, or other shell metacharacters to be interpreted as part of the command execution flow. This creates a direct pathway for attackers to escalate their privileges and potentially gain full control over the system running the monitoring service. The vulnerability is particularly concerning because monitoring tools typically run with elevated privileges to perform their functions, making successful exploitation potentially devastating.
Operationally, the impact of this command injection vulnerability extends beyond simple data compromise to include complete system takeover capabilities. An attacker who successfully exploits this vulnerability can execute commands with the same privileges as the monitoring service, which may include administrative rights or access to sensitive system resources. This could lead to data exfiltration, system modification, privilege escalation, or even lateral movement within a network environment where the monitoring tool is deployed. The attack surface is particularly broad since monitoring systems are often integrated into critical infrastructure components, making them attractive targets for adversaries seeking persistent access.
Security mitigation strategies for CVE-2020-7620 should focus on immediate remediation through version updates to pomelo-monitor 0.3.8 or later, which should contain patches addressing the command injection vulnerability. Organizations should also implement input validation and sanitization measures at all points where user-supplied data enters the monitoring system, following the principle of least privilege for monitoring services to minimize potential damage from successful exploitation. Network segmentation and monitoring of unusual command execution patterns can provide additional defense layers. The vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter, highlighting the need for robust input validation and secure coding practices in monitoring and management tools. Organizations should also consider implementing web application firewalls and runtime application self-protection measures to detect and prevent exploitation attempts.