CVE-2008-2401 in Java Active Server Pages
Summary
by MITRE
The Admin Server in Sun Java Active Server Pages (ASP) Server before 4.0.3 allows remote attackers to append to arbitrary new or existing files via the first argument to a certain file that is included by multiple unspecified ASP applications.
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Analysis
by VulDB Data Team • 08/11/2019
The vulnerability identified as CVE-2008-2401 resides within the Sun Java Active Server Pages (ASP) Server administrative component, specifically affecting versions prior to 4.0.3. This issue represents a critical file manipulation flaw that enables remote attackers to append data to arbitrary files on the target system. The vulnerability stems from insufficient input validation within the administrative server's file handling mechanisms, particularly when processing file inclusion operations that are utilized across multiple unspecified ASP applications. The attack vector exploits the first argument of a specific file that gets included by various applications, creating a pathway for unauthorized file operations that extend beyond the intended scope of the administrative interface.
The technical exploitation of this vulnerability occurs through a combination of improper parameter validation and inadequate access controls within the administrative server's file processing routines. Attackers can leverage this weakness to append content to files that they would not normally have permission to modify, potentially including system configuration files, log files, or even application-specific data files. The flaw essentially allows for arbitrary file write operations through the administrative interface, bypassing normal file system permissions and access controls that should protect sensitive system resources. This type of vulnerability falls under the category of path traversal and file manipulation attacks, which are commonly categorized under CWE-22 (Path Traversal) and CWE-73 (External Control of File Name or Path) in the Common Weakness Enumeration framework.
The operational impact of CVE-2008-2401 extends beyond simple unauthorized file access, as it can potentially enable attackers to escalate privileges and compromise the entire system. By appending malicious content to critical system files, attackers may be able to execute arbitrary code, modify system behavior, or establish persistent access points within the target environment. The vulnerability's presence across multiple unspecified ASP applications means that a single exploit could potentially affect various components of the web application infrastructure, amplifying the potential damage. This weakness aligns with several techniques documented in the MITRE ATT&CK framework, particularly those related to privilege escalation and persistence mechanisms that leverage file system manipulation for long-term access.
Mitigation strategies for this vulnerability should focus on immediate patch application to upgrade to Sun Java Active Server Pages Server version 4.0.3 or later, which contains the necessary fixes for the file handling routines. Organizations should also implement network segmentation to limit access to the administrative server interfaces and establish strict access controls for administrative functions. Additional defensive measures include monitoring file system modifications, implementing proper input validation for all file operations, and conducting regular security assessments of web application components. The vulnerability demonstrates the importance of proper access control implementation and input validation in administrative interfaces, as these components often serve as primary attack vectors for sophisticated exploitation attempts. Security teams should also consider implementing intrusion detection systems that can identify anomalous file manipulation patterns that may indicate exploitation attempts against similar weaknesses in web application frameworks.