CVE-2000-0346 in AppleShare
Summary
by MITRE
AppleShare IP 6.1 and later allows a remote attacker to read potentially sensitive information via an invalid range request to the web server.
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Analysis
by VulDB Data Team • 04/21/2026
The vulnerability described in CVE-2000-0346 represents a significant security flaw in AppleShare IP versions 6.1 and later, which are network file sharing protocols designed for mac os x environments. This issue manifests as a information disclosure vulnerability that occurs when the web server component receives malformed range requests from remote attackers. The flaw stems from inadequate input validation within the server's handling of http range requests, which are typically used to request specific portions of a file for efficient transmission. When an attacker submits an invalid range request, the server fails to properly sanitize the input and instead returns portions of memory or internal data structures that may contain sensitive information.
The technical implementation of this vulnerability falls under the category of improper input validation as classified by cwe-20, specifically manifesting as a weakness in how the web server processes range header parameters in http requests. The flaw occurs at the application layer where the server's http implementation does not adequately check the boundaries and format of range requests before processing them. This vulnerability is particularly concerning because it allows remote attackers to potentially access memory contents that may include session tokens, user credentials, system information, or other confidential data that should not be exposed through normal file access mechanisms. The attack vector is straightforward as it requires only the ability to send http requests to the vulnerable web server without any authentication or privileged access.
From an operational impact perspective, this vulnerability creates a substantial risk for organizations using AppleShare IP services as it enables passive information gathering without requiring authentication or specialized attack tools. An attacker could systematically probe the server with various invalid range requests to map out memory structures and extract sensitive data over time. The vulnerability affects the confidentiality aspect of the information security triad by allowing unauthorized disclosure of sensitive information through a standard web protocol. Network administrators and security professionals should note that this issue impacts not just the web server functionality but also the broader security posture of systems relying on AppleShare IP for file sharing and network services. The vulnerability is particularly dangerous in environments where the web server component is accessible from untrusted networks or when the server hosts sensitive data that could be accessed through this information disclosure channel.
Mitigation strategies for CVE-2000-0346 should focus on immediate patching of affected AppleShare IP versions to address the input validation flaw in the web server component. Organizations should implement network segmentation to restrict access to AppleShare IP services, particularly the web server functionality, to trusted networks only. Additional defensive measures include deploying web application firewalls that can detect and block malformed range requests, implementing strict input validation rules for http headers, and monitoring web server logs for suspicious range request patterns. Security teams should also consider disabling unnecessary web server functionality if the file sharing services do not require http access. The vulnerability demonstrates the importance of proper input validation and boundary checking in web server implementations as outlined in various security frameworks and best practices for preventing information disclosure attacks. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other network services and ensure comprehensive protection against similar classes of attacks.