CVE-2024-40898 is a high-severity Server-Side Request Forgery (SSRF) vulnerability identified in Apache HTTP Server on Windows systems, specifically when utilizing the mod_rewrite module in server or virtual host context. This vulnerability allows attackers to potentially leak NTLM hashes to a malicious server through crafted SSRF requests. The presence of this flaw underscores the critical need for organizations to assess their current configurations and promptly apply available patches.
The CVSS score for this vulnerability is 7.5, categorizing it as high severity. This score reflects the significant risk posed to organizations, particularly in environments where Apache HTTP Server is deployed. Attackers may leverage this vulnerability to gain unauthorized access to sensitive authentication data, which could lead to further exploitation within the network.
With the exploitation status classified as high, it is vital for organizations to prioritize remediation efforts. Users are advised to upgrade to Apache HTTP Server version 2.4.62, which includes fixes for this issue. Organizations that fail to address this vulnerability could face serious risks, including data breaches and unauthorized access.
Given the potential impact of CVE-2024-40898, organizations should implement a robust vulnerability management program to continuously monitor and address security weaknesses within their systems.
Vulnerability Details
The vulnerability allows attackers to exploit the Apache HTTP Server on Windows, using mod_rewrite in server or virtual host contexts. By sending malicious requests, attackers can potentially leak NTLM hashes to a malicious server. The issue was published on July 18, 2024, and affects all versions of the Apache HTTP Server prior to version 2.4.62. The CWE classification for this vulnerability is CWE-918.
Technical Analysis
This vulnerability arises from an improper validation of input parameters used in server-side request handling. The attack vector is network-based, requiring no privileges or user interaction, which makes it particularly dangerous. The attack complexity is low, meaning that even less sophisticated attackers can exploit this vulnerability. The confidentiality impact is high, as successful exploitation can lead to the leakage of sensitive authentication information.
Risk & Impact Analysis
Risk to organizations includes unauthorized access to sensitive data, particularly NTLM hashes, which could facilitate further attacks against the internal network. Given that the confidentiality impact is high, organizations utilizing the vulnerable versions of Apache HTTP Server must assess their exposure and implement necessary mitigations. The urgency for defenders is high, necessitating immediate action to patch systems and prevent potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Apache HTTP Server prior to version 2.4.62 are affected by this vulnerability. Organizations must update to version 2.4.62 or later to mitigate the risk associated with CVE-2024-40898.
Mitigation & Remediation
Organizations should prioritize patching by upgrading to Apache HTTP Server version 2.4.62. Additionally, security teams should implement configuration hardening to minimize exposure to SSRF vulnerabilities. Regular security assessments and penetration testing can help identify and remediate vulnerabilities effectively. For comprehensive evaluation, organizations may consider engaging in penetration testing to validate the security posture.
Detection Guidance
Monitoring logs for unusual access patterns and behavior anomalies is crucial. Security teams should look for any signs of malformed requests or unauthorized access attempts that may indicate exploitation of this vulnerability. Implementing network signatures can also enhance detection capabilities.
AppSecure Threat Intelligence Insight
CVE-2024-40898 highlights the need for continuous vigilance in web server security. The presence of SSRF vulnerabilities emphasizes the importance of secure coding practices and proper input validation. Security teams should focus on understanding the implications of such vulnerabilities to prevent data leaks and unauthorized access. For further enhancing security, organizations should explore penetration testing methodologies and adopt proactive security measures.
Continuous improvement in security practices is essential to mitigate risks associated with vulnerabilities like CVE-2024-40898. Organizations should regularly assess their infrastructure and adopt vulnerability management programs to address emerging threats.
Finally, organizations should stay informed about threat trends and vulnerabilities to enhance their security posture and resilience against potential attacks. Engaging with web application security testing efforts can further strengthen defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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