CVE-2009-0508 in WebSphere Application Server
Summary
by MITRE
The Servlet Engine/Web Container and JSP components in IBM WebSphere Application Server (WAS) 5.1.0, 5.1.1.19, 6.0.2 before 6.0.2.35, 6.1 before 6.1.0.23, and 7.0 before 7.0.0.3 allow remote attackers to read arbitrary files contained in war files in (1) web-inf, (2) meta-inf, and unspecified other directories via unknown vectors, related to (a) web-based applications and (b) the administrative console.
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Analysis
by VulDB Data Team • 05/15/2025
The vulnerability identified as CVE-2009-0508 represents a critical directory traversal flaw within IBM WebSphere Application Server components that affects multiple versions from 5.1.0 through 7.0.0.2. This weakness specifically impacts the Servlet Engine/Web Container and JSP components, creating an avenue for remote attackers to access sensitive files that should remain protected within web application archives. The vulnerability stems from insufficient input validation and access control mechanisms that fail to properly restrict file access patterns, particularly when processing requests directed at war file contents. Attackers can exploit this issue to retrieve arbitrary files from directories such as web-inf, meta-inf, and unspecified other protected locations, potentially exposing critical application configuration files, source code, and sensitive data.
The technical nature of this vulnerability aligns with CWE-22, which describes improper limitation of a pathname to a restricted directory, commonly known as directory traversal or path traversal attacks. This flaw operates at the application layer where the WebSphere server fails to adequately sanitize user-supplied input that influences file system access operations. The vulnerability manifests through both web-based applications and the administrative console, indicating a fundamental flaw in the server's security architecture rather than a specific application-level issue. Attackers can leverage unknown vectors to manipulate file access requests, potentially bypassing normal security boundaries that should protect sensitive directories within web application archives. The impact extends beyond simple information disclosure to potentially enable further exploitation through access to configuration files, database connection details, and application source code that could reveal additional attack vectors.
The operational impact of this vulnerability is severe and multifaceted, as it allows attackers to extract sensitive information that could compromise the entire application stack. When attackers can access files within web-inf directories, they gain access to web application configuration files such as web.xml, which contains critical deployment descriptors and security configurations. Access to meta-inf directories can reveal jar manifest files containing version information, cryptographic keys, and other metadata that could be used to craft more sophisticated attacks. The unspecified other directories mentioned in the vulnerability description suggest that the protection mechanisms are fundamentally flawed, potentially exposing any file within the web application archive structure. This vulnerability directly impacts the principle of least privilege and can enable attackers to escalate their privileges by obtaining credentials, encryption keys, or other sensitive artifacts that should remain isolated from public access.
Mitigation strategies for CVE-2009-0508 should include immediate patch application to the affected IBM WebSphere Application Server versions, as IBM released specific fixes for this vulnerability. Organizations should implement network segmentation and access controls to limit exposure of WebSphere instances to untrusted networks. The principle of least privilege must be enforced through proper configuration of web application deployments, ensuring that sensitive directories are not accessible through standard web requests. Input validation mechanisms should be strengthened at multiple layers including application firewalls, web application firewalls, and server-side validation routines. Security monitoring should be enhanced to detect anomalous file access patterns, particularly requests that attempt to traverse directory structures. Additionally, regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in web application architectures, while implementing proper file system permissions and access controls that prevent unauthorized file system access. The ATT&CK framework categorizes this vulnerability under privilege escalation and credential access tactics, emphasizing the need for comprehensive security controls that address both network-level and application-level protections.