CVE-2002-0455 in Incredimail
Summary
by MITRE
IncrediMail stores attachments in a directory with a fixed name, which could make it easier for attackers to exploit vulnerabilities in other software that rely on installing and reading files from directories with known pathnames.
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Analysis
by VulDB Data Team • 06/19/2024
The vulnerability identified as CVE-2002-0455 resides in IncrediMail email client software and represents a significant directory traversal and path exposure issue. This flaw stems from the application's design decision to store email attachments in a directory with a fixed, predictable name rather than utilizing dynamic or randomized directory structures. The security implications of this design choice extend beyond the immediate application context and create exploitable conditions that can be leveraged by malicious actors.
The technical flaw manifests in the predictable directory naming convention used by IncrediMail for attachment storage. When email attachments are saved to disk, they are placed within a directory structure that follows a consistent, well-known path pattern. This predictable placement creates a scenario where attackers can easily locate and potentially manipulate attachment files without requiring additional reconnaissance or privilege escalation techniques. The vulnerability directly aligns with CWE-22 Path Traversal and CWE-73 Path Traversal in Directory Name, both of which address improper handling of file paths that can lead to unauthorized access or manipulation of system resources.
From an operational impact perspective, this vulnerability creates multiple attack vectors for threat actors. The fixed directory structure enables attackers to perform directory traversal attacks more easily, potentially allowing them to access or modify other files stored in the same directory hierarchy. The vulnerability also facilitates privilege escalation scenarios where attackers can leverage the predictable file locations to execute malicious code or manipulate system files that rely on reading from known directory paths. This issue is particularly concerning in environments where IncrediMail is used alongside other software components that trust or depend on files located in predictable directory structures.
The attack surface for this vulnerability extends to various threat actors including malware authors, social engineers, and advanced persistent threats. The predictable nature of the directory structure means that attackers can craft exploits that target specific file locations without requiring extensive reconnaissance. This vulnerability also aligns with several ATT&CK tactics including privilege escalation through file system manipulation and defense evasion through exploitation of predictable system paths. The issue becomes more severe in multi-user environments or systems where multiple applications share similar directory structures or where the attachment directory might contain sensitive data from other applications.
Mitigation strategies for CVE-2002-0455 should focus on implementing proper directory management practices and enhancing the security posture of the email client. Organizations should consider updating to newer versions of IncrediMail that address this directory naming issue or implementing additional security controls such as directory permissions, access control lists, and file system monitoring. The vulnerability highlights the importance of avoiding predictable pathnames in security-sensitive applications and emphasizes the need for proper sandboxing techniques to isolate application data. Security administrators should also implement regular vulnerability assessments to identify similar path exposure issues in other applications and ensure that file system access controls are properly configured to prevent unauthorized access to sensitive directories.