CVE-2016-10367 in Monitor Pro
Summary
by MITRE
In Opsview Monitor Pro (Prior to 5.1.0.162300841, prior to 5.0.2.27475, prior to 4.6.4.162391051, and 4.5.x without a certain 2016 security patch), an unauthenticated Directory Traversal vulnerability can be exploited by issuing a specially crafted HTTP GET request utilizing a simple URL encoding bypass, %252f instead of /.
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Analysis
by VulDB Data Team • 09/23/2020
The vulnerability identified as CVE-2016-10367 affects Opsview Monitor Pro versions prior to specific security releases, creating a critical directory traversal weakness that allows unauthorized access to sensitive system resources. This flaw exists within the web interface of the monitoring platform, which is commonly used in enterprise environments for network and system monitoring. The vulnerability stems from inadequate input validation in the HTTP request processing logic, specifically when handling URL encoding patterns that should be normalized before file access operations are performed.
The technical exploitation of this vulnerability relies on a sophisticated URL encoding bypass technique that leverages the double encoding pattern %252f instead of the standard forward slash character /. This bypass mechanism allows attackers to circumvent the normal path traversal protection mechanisms that would typically prevent access to files outside the intended web root directory. The vulnerability operates at the application layer and can be exploited through simple HTTP GET requests, making it particularly dangerous as it requires no authentication credentials to initiate the attack vector. This type of flaw aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation could enable attackers to access sensitive configuration files, system logs, credential storage locations, and potentially execute arbitrary code within the application environment. In enterprise monitoring contexts where Opsview Monitor Pro is deployed, this vulnerability could provide attackers with access to critical infrastructure monitoring data, system credentials, and potentially serve as a foothold for further lateral movement within the network. The vulnerability's exploitation does not require specialized tools or deep technical knowledge, making it particularly dangerous as it can be leveraged by threat actors with minimal expertise.
Organizations should immediately implement mitigation strategies including applying the vendor-provided security patches released after the affected versions mentioned in the CVE description. Network segmentation and web application firewalls can provide additional protective layers, though these should not be considered substitutes for proper patch management. The vulnerability demonstrates the importance of robust input validation and proper URL decoding mechanisms within web applications, aligning with ATT&CK technique T1059 for execution through web shells and T1083 for discovery of system information. Regular security assessments and vulnerability scanning should include checks for similar path traversal vulnerabilities in other applications and systems within the organization's attack surface.