CVE-2017-1743 in WebSphere Application Server
Summary
by MITRE
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 could allow a remote attacker to obtain sensitive information caused by improper handling of Administrative Console panel fields. When exploited an attacker could browse the file system. IBM X-Force ID: 134933.
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Analysis
by VulDB Data Team • 03/08/2023
IBM WebSphere Application Server versions 7.0, 8.0, 8.5, and 9.0 contain a critical information disclosure vulnerability that stems from inadequate validation of Administrative Console panel fields. This flaw resides in the server's handling of user input within the administrative interface, specifically in how it processes parameters related to console panel navigation and file operations. The vulnerability manifests when the application server fails to properly sanitize or validate input parameters that control access to internal system resources through the administrative console. Attackers can exploit this weakness by crafting malicious requests that manipulate the panel field parameters, effectively bypassing normal access controls and gaining unauthorized access to the underlying file system. The improper handling of these fields creates a path for remote code execution and data exfiltration, as the system does not adequately verify the legitimacy of user-supplied input before processing file system operations.
The technical implementation of this vulnerability aligns with CWE-20, which describes improper input validation, and CWE-22, which covers improper limitation of a pathname to a restricted directory. The flaw operates at the application layer where user-provided data flows directly into system operations without sufficient sanitization or access control verification. This vulnerability enables attackers to traverse the file system hierarchy and potentially access sensitive configuration files, application data, or system binaries that should remain protected from unauthorized access. The attack vector is particularly concerning as it requires no authentication for the initial exploitation phase, making it accessible to remote attackers who can leverage this weakness to gain insights into the server's internal structure and potentially extract confidential information. The vulnerability's impact is amplified by the fact that it affects multiple major versions of IBM WebSphere, suggesting a fundamental design flaw in the input validation mechanisms of the administrative console component.
The operational implications of this vulnerability extend beyond simple information disclosure, creating potential pathways for more severe attacks within the enterprise environment. An attacker who successfully exploits this vulnerability can potentially map the entire file system structure, identify sensitive files and directories, and extract critical system information that could aid in further exploitation attempts. The administrative console typically provides access to various system management functions, and this vulnerability allows bypassing the normal authentication and authorization controls that should protect these functions. This weakness can enable attackers to perform reconnaissance activities, gather intelligence about the target environment, and identify additional vulnerabilities within the application server or supporting infrastructure. The impact is particularly severe in environments where WebSphere Application Server serves as a critical component of enterprise applications, as it could provide attackers with the information needed to escalate privileges or launch more sophisticated attacks against the organization's digital assets.
Organizations should implement immediate mitigations including applying the relevant IBM security patches and updates that address this vulnerability in the affected WebSphere Application Server versions. The recommended approach involves configuring proper input validation and sanitization measures within the administrative console components to prevent malicious parameter manipulation. Network segmentation and access control measures should be implemented to limit exposure of the administrative console to trusted networks only, reducing the attack surface available to remote attackers. Additionally, organizations should consider implementing web application firewalls that can detect and block malicious requests attempting to exploit this vulnerability pattern. The mitigation strategy should also include regular monitoring of system logs for suspicious activities related to administrative console access and file system operations, as well as implementing comprehensive audit trails to track access to sensitive system resources. Security teams should conduct thorough vulnerability assessments to identify any additional weaknesses that may be present in the WebSphere environment and ensure that proper security controls are in place to protect against similar information disclosure vulnerabilities. This vulnerability represents a significant risk to enterprise security and requires immediate attention to prevent potential compromise of critical business applications and data assets.