CVE-2001-1449 in HTTP Server
Summary
by MITRE
The default installation of Apache before 1.3.19 on Mandrake Linux 7.1 through 8.0 and Linux Corporate Server 1.0.1 allows remote attackers to list the directory index of arbitrary web directories.
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Analysis
by VulDB Data Team • 11/17/2024
The vulnerability described in CVE-2001-1449 represents a critical directory traversal issue affecting Apache web servers installed on specific Mandrake Linux distributions. This flaw stems from improper configuration defaults that fail to adequately restrict directory listing permissions, allowing unauthorized remote attackers to access web directory contents that should remain protected. The affected versions include Apache 1.3.18 and earlier installations on Mandrake Linux 7.1 through 8.0 and Linux Corporate Server 1.0.1, creating a significant security gap that could expose sensitive files and system information to malicious actors. The vulnerability specifically targets the default installation configuration where directory indexing permissions were not properly restricted, enabling attackers to enumerate web directories through crafted requests.
The technical implementation of this vulnerability exploits Apache's default directory listing behavior when the Options directive lacks proper restrictions. When Apache processes requests for directories where directory listing is enabled but access controls are insufficient, attackers can manipulate URL parameters to traverse the filesystem and retrieve directory indexes of arbitrary web directories. This occurs because the default Apache configuration on these Mandrake distributions did not properly implement access control restrictions that would prevent unauthorized directory enumeration. The flaw operates at the HTTP server level where the server's configuration fails to enforce proper access controls for directory traversal operations, allowing remote exploitation without authentication. This represents a classic security misconfiguration issue where default settings create unintended access paths for malicious users.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable reconnaissance data that can be used for further exploitation. Directory listings can reveal sensitive file structures including configuration files, backup copies, source code repositories, and potentially vulnerable scripts that might contain additional security flaws. Attackers can leverage this information to identify specific system components, understand the application architecture, and plan more sophisticated attacks targeting known vulnerabilities within the discovered directories. The vulnerability also enables attackers to discover hidden files and directories that should not be publicly accessible, potentially exposing system internals or application-specific information that could be exploited in subsequent attack phases. This reconnaissance capability significantly increases the attack surface and provides attackers with detailed knowledge of the target environment.
Mitigation strategies for CVE-2001-1449 involve implementing proper Apache configuration settings that restrict directory listing permissions and enforce access controls. System administrators should modify the Apache configuration files to explicitly disable directory listing using the Options -Indexes directive or implement proper access controls through .htaccess files. The most effective remediation includes updating to Apache version 1.3.19 or later where this vulnerability has been addressed through improved default configurations. Organizations should also implement regular security audits to verify that directory listing permissions are properly configured and that no unintended access paths exist. Network segmentation and firewall rules can provide additional layers of protection by restricting access to web servers from untrusted networks. This vulnerability aligns with CWE-548, which addresses information exposure through directory listing, and maps to ATT&CK technique T1213.001 for data from information repositories, highlighting the reconnaissance aspect of this vulnerability. The security community has recognized this issue as a fundamental configuration error that underscores the importance of proper access control implementation in web server deployments.