CVE-2004-1181 in htmlheadline
Summary
by MITRE
htmlheadline before 21.8 allows local users to overwrite arbitrary files via a symlink attack on temporary files.
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Analysis
by VulDB Data Team • 06/02/2019
The vulnerability identified as CVE-2004-1181 affects the htmlheadline utility version 21.8 and earlier, presenting a significant security risk through a symlink attack vector. This flaw enables local attackers to manipulate temporary files created by the application, potentially leading to arbitrary file overwrites. The vulnerability stems from insufficient validation of temporary file creation processes, allowing malicious users to exploit the system's handling of symbolic links during file operations. Such attacks typically occur when applications create temporary files without proper security checks or atomic operations, leaving them susceptible to race conditions and symlink manipulation.
The technical implementation of this vulnerability involves the exploitation of weak temporary file handling mechanisms within the htmlheadline application. When the utility processes HTML content and generates temporary files for intermediate processing, it fails to properly validate or secure these temporary file paths. Attackers can create symbolic links in the temporary directory that point to sensitive system files, then trigger the application to write data to these locations, effectively overwriting critical system resources. This type of attack falls under the category of time-of-check to time-of-use race conditions and represents a classic example of improper temporary file handling as defined by CWE-362. The vulnerability demonstrates poor security practices in file system operations and highlights the importance of proper file access controls and atomic operations in security-critical applications.
The operational impact of this vulnerability extends beyond simple file overwrites, potentially enabling attackers to escalate privileges or compromise system integrity. Local users with minimal privileges can leverage this weakness to modify system files, potentially leading to privilege escalation or persistent backdoors. The attack requires local system access but does not necessitate network connectivity, making it particularly dangerous in environments where local access is not properly restricted. This vulnerability aligns with ATT&CK technique T1059.007 for executing malicious code through local system interfaces and T1548.001 for privilege escalation. The risk is compounded by the fact that such temporary file manipulation attacks are often difficult to detect through standard monitoring, as they may appear as legitimate system operations. Organizations should consider this vulnerability in their threat modeling exercises, particularly when evaluating applications that handle user-provided content or perform file system operations.
Mitigation strategies for CVE-2004-1181 involve immediate patching of the htmlheadline utility to version 21.8 or later, which addresses the temporary file handling flaw. System administrators should implement proper file access controls and ensure that temporary directories have appropriate permissions to prevent symlink creation by unprivileged users. The application should be configured to use atomic file operations and validate temporary file paths before processing. Additional security measures include restricting local access to system resources, implementing proper file system auditing, and monitoring for suspicious file creation patterns. Organizations should also consider implementing sandboxing techniques for applications that handle HTML content, as recommended by security frameworks such as the NIST Cybersecurity Framework. Regular security assessments and vulnerability scanning should identify similar flaws in other applications, as this type of temporary file manipulation represents a common security weakness in many legacy systems. The vulnerability serves as a reminder of the importance of secure coding practices and the need for comprehensive security testing throughout the software development lifecycle.