CVE-2016-0380 in Sterling Connect
Summary
by MITRE
IBM Sterling Connect:Direct for Unix 4.1.0 before 4.1.0.4 iFix073 and 4.2.0 before 4.2.0.4 iFix003 uses default file permissions of 0664, which allows local users to obtain sensitive information via standard filesystem operations.
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Analysis
by VulDB Data Team • 03/21/2019
IBM Sterling Connect:Direct for Unix contains a security vulnerability that stems from improper default file permissions implementation. The affected versions utilize a default permission setting of 0664 for files, which grants read and write access to the owner, group, and others. This configuration creates an insecure default state where sensitive information can be accessed by unauthorized local users through standard filesystem operations. The vulnerability represents a classic case of insufficient privilege separation and weak default security configurations that violate fundamental security principles.
The technical flaw manifests when the system creates files with overly permissive 0664 permissions, allowing any user on the system to read and modify these files. This permission setting enables local users to access sensitive data through basic file operations such as reading, copying, or even modifying the contents of these files. The vulnerability is particularly concerning because it operates at the filesystem level without requiring any special privileges or complex attack vectors. This type of flaw aligns with CWE-732, which describes improper permission assignment where the system fails to properly restrict access to sensitive resources, and it represents a direct violation of the principle of least privilege.
The operational impact of this vulnerability extends beyond simple information disclosure. Local users with access to the system can exploit this weakness to gain unauthorized access to sensitive data that should remain protected. This includes configuration files, authentication credentials, and potentially business-critical information that flows through the Connect:Direct system. The vulnerability affects organizations that rely on Sterling Connect:Direct for secure file transfer operations, potentially exposing them to data breaches and compliance violations. Attackers could leverage this weakness to escalate privileges or conduct data exfiltration, making this a significant concern for enterprises handling sensitive information.
Organizations should implement immediate mitigations including applying the vendor-provided iFixes that address this specific vulnerability. The recommended approach involves updating to IBM Sterling Connect:Direct versions 4.1.0.4 iFix073 or 4.2.0.4 iFix003, which correct the default file permission settings. System administrators should also conduct comprehensive audits of existing file permissions across the Connect:Direct installation to identify and correct any files that may have been created with insecure permissions. Additionally, implementing automated monitoring solutions can help detect unauthorized access attempts to sensitive files and ensure compliance with security policies. This vulnerability demonstrates the critical importance of proper default security configurations and regular security updates in preventing unauthorized access to sensitive system resources.