CVE-2012-0429 in eDirectory
Summary
by MITRE
dhost in NetIQ eDirectory 8.8.6.x before 8.8.6.7 and 8.8.7.x before 8.8.7.2 on Windows allows remote authenticated users to cause a denial of service (daemon crash) via crafted characters in an HTTP request.
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Analysis
by VulDB Data Team • 04/20/2021
The vulnerability identified as CVE-2012-0429 affects the dhost component within NetIQ eDirectory version 8.8.6.x prior to 8.8.6.7 and 8.8.7.x prior to 8.8.7.2 running on Windows platforms. This issue represents a significant security weakness that can be exploited by remote authenticated attackers to disrupt service availability. The vulnerability specifically manifests through crafted characters embedded within HTTP requests that are processed by the dhost daemon, leading to unexpected behavior and ultimately causing the daemon to crash. This type of vulnerability falls under the category of denial of service attacks, which can severely impact the operational integrity of directory services that rely on eDirectory for authentication and authorization functions.
The technical flaw stems from inadequate input validation within the dhost component of the NetIQ eDirectory software. When the daemon processes HTTP requests containing specially crafted characters, it fails to properly sanitize or validate the input data before processing. This lack of proper input validation creates a condition where malformed or unexpected data can trigger memory corruption or other internal processing errors that cause the daemon to terminate abruptly. The vulnerability is particularly concerning because it requires only authenticated access to exploit, meaning that an attacker who has already gained legitimate credentials within the network can leverage this weakness to disrupt critical directory services. From a cybersecurity perspective, this vulnerability represents a classic example of improper input validation that can lead to service disruption and potential business continuity issues.
The operational impact of CVE-2012-0429 extends beyond simple service disruption as it can affect the entire directory service infrastructure that organizations depend upon for user authentication, access control, and resource management. When the dhost daemon crashes, it can result in temporary or extended outages of directory services, potentially affecting thousands of users who rely on these systems for network access, email services, and application authentication. Organizations using NetIQ eDirectory may experience cascading effects throughout their IT environment, as many systems depend on directory services for proper operation. The vulnerability also creates opportunities for attackers to conduct persistent disruption campaigns or to mask other more serious attacks by creating noise through service disruption. This type of vulnerability aligns with ATT&CK technique T1499.004 for network denial of service and represents a weakness that can be categorized under CWE-20, which covers Improper Input Validation.
Mitigation strategies for CVE-2012-0429 should focus on both immediate remediation and long-term defensive measures. The primary and most effective solution involves applying the vendor-supplied patches that address the input validation issues within the dhost component of NetIQ eDirectory. Organizations should prioritize updating their systems to version 8.8.6.7 or 8.8.7.2, depending on their current installation, to eliminate the vulnerability entirely. Network segmentation and access controls should be reviewed to ensure that only authorized users have access to the affected services, reducing the attack surface. Additionally, implementing monitoring and alerting mechanisms to detect unusual patterns in HTTP request processing can help identify potential exploitation attempts. Security teams should also consider implementing rate limiting and input sanitization measures at network boundaries to provide additional protection against similar vulnerabilities. The vulnerability demonstrates the critical importance of maintaining up-to-date software and the need for comprehensive vulnerability management programs that can quickly respond to emerging threats. Organizations should also conduct regular security assessments to identify other potential input validation weaknesses within their directory services infrastructure and ensure proper configuration management practices are in place to prevent similar issues from occurring in the future.