CVE-2002-2375 in Communigate Pro
Summary
by MITRE
Directory traversal vulnerability in CommuniGate Pro 4.0b4 and possibly earlier versions allows remote attackers to list the contents of the WebUser directory and its parent directory via a (1) .. (dot dot) or (2) . (dot) in a URL. NOTE: it is not clear whether this issue reveals any more information regarding directory structure than is already available to any CommuniGate Pro user, although there is a possibility that it could be used to infer product version information.
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Analysis
by VulDB Data Team • 04/20/2019
The vulnerability described in CVE-2002-2375 represents a classic directory traversal flaw that affects CommuniGate Pro versions 4.0b4 and potentially earlier releases. This security weakness stems from inadequate input validation within the web interface component of the messaging server software, specifically when processing URL requests containing special directory reference characters. The vulnerability allows remote attackers to manipulate file path resolution through the use of dot-dot-slash sequences or single dot references in web requests, enabling unauthorized access to directory structures beyond the intended web user space.
This directory traversal issue manifests when the application fails to properly sanitize user-supplied URL parameters before using them in file system operations. The flaw specifically impacts the WebUser directory and its parent directories, creating a potential information disclosure risk that could expose sensitive directory structures to remote attackers. According to the vulnerability description, the primary concern involves the ability to enumerate directory contents, though it remains uncertain whether this exposure provides additional information beyond what is already accessible to legitimate CommuniGate Pro users. The ambiguity regarding the extent of information disclosure suggests that while the vulnerability may not reveal confidential data directly, it could potentially aid attackers in mapping the underlying system architecture and inferring product version details through careful analysis of directory structures.
The operational impact of this vulnerability extends beyond simple directory enumeration, as it creates opportunities for attackers to gather intelligence about the target system's configuration and potentially identify other security weaknesses within the CommuniGate Pro installation. From a cybersecurity perspective, this vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. The attack vector leverages the fundamental weakness in input validation that has been consistently identified as a critical security flaw across numerous web applications and server software platforms. Security professionals should note that while this vulnerability may not directly compromise sensitive data, it provides attackers with valuable reconnaissance information that could facilitate more sophisticated attacks targeting the underlying system.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and sanitization mechanisms within the web interface components of CommuniGate Pro installations. The most effective approach involves configuring the application to reject or properly encode any URL parameters containing directory traversal sequences before they are processed by the file system operations. Organizations should also consider implementing proper access controls and privilege separation to limit the potential impact of such vulnerabilities. The remediation process typically requires updating to a patched version of CommuniGate Pro where the directory traversal issue has been addressed through improved input validation and path resolution mechanisms. Additionally, network segmentation and web application firewalls can provide additional layers of protection to prevent exploitation of such path traversal vulnerabilities, aligning with defensive techniques outlined in the MITRE ATT&CK framework under the reconnaissance and privilege escalation domains.