CVE-2016-5537 in NetBeans
Summary
by MITRE
Unspecified vulnerability in the NetBeans component in Oracle Fusion Middleware 8.1 allows local users to affect confidentiality, integrity, and availability via unknown vectors. NOTE: the previous information is from the October 2016 CPU. Oracle has not commented on third-party claims that this issue is a directory traversal vulnerability which allows local users with certain permissions to write to arbitrary files and consequently gain privileges via a .. (dot dot) in a archive entry in a ZIP file imported as a project.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 06/30/2024
The vulnerability identified as CVE-2016-5537 resides within the NetBeans component of Oracle Fusion Middleware version 8.1, representing a significant security weakness that affects local users with specific permissions. This unspecified vulnerability manifests through unknown vectors that compromise the fundamental security principles of confidentiality, integrity, and availability. The issue's classification as a local privilege escalation vulnerability indicates that attackers must already possess some level of system access or user permissions to exploit this weakness, making it particularly concerning for environments where privilege separation is not strictly enforced.
Technical analysis reveals that the vulnerability stems from inadequate input validation mechanisms within the NetBeans project import functionality, specifically when processing ZIP archive entries. The confirmed exploitation vector involves directory traversal attacks leveraging the ".." (dot dot) notation within archive entries, which allows malicious actors to write files to arbitrary locations on the system. This directory traversal vulnerability operates at the file system level, enabling attackers to bypass normal access controls and potentially overwrite critical system files or inject malicious code into the application environment. The vulnerability's impact extends beyond simple data corruption as it provides pathways for privilege escalation and persistent system compromise.
The operational implications of CVE-2016-5537 are substantial for organizations utilizing Oracle Fusion Middleware 8.1, particularly in enterprise environments where NetBeans is used for development and project management. Local users with even minimal system permissions can exploit this vulnerability to gain unauthorized access to sensitive data, modify critical system files, or disrupt service availability through destructive operations. The attack surface is particularly broad given that many development environments rely on NetBeans for project import operations, making this vulnerability a prime target for both internal threat actors and sophisticated external attackers seeking to establish persistent footholds within corporate networks. This vulnerability aligns with CWE-22 Directory Traversal and CWE-73 Path Traversal attacks, demonstrating how inadequate input validation can lead to severe privilege escalation scenarios.
Security mitigations for CVE-2016-5537 should prioritize immediate patching of affected Oracle Fusion Middleware 8.1 installations, as Oracle has not provided specific workarounds for this vulnerability. Organizations must implement strict access controls and privilege separation to limit local user permissions, particularly for users who have access to project import functionality. Network segmentation and monitoring of file system access patterns can help detect potential exploitation attempts, while regular security assessments should verify that no malicious files have been introduced through compromised project imports. The vulnerability's characteristics align with ATT&CK technique T1059 Command and Scripting Interpreter and T1068 Exploitation for Privilege Escalation, making defensive measures that focus on input validation and access control particularly effective. Organizations should also consider implementing automated file integrity monitoring solutions to detect unauthorized modifications to critical system files that could result from successful exploitation of this directory traversal vulnerability.