CVE-2024-40725-CVE-2024-40898

🚨Alert🚨Apache Vulnerability

🚨Alert🚨Security Advisory: CVE-2024-40725 and CVE-2024-40898🚨Alert🚨

CVE-2024-40725 Description: CVE-2024-40725 is a high-severity vulnerability found in Apache HTTP Server versions 2.4.0 to 2.4.61. This vulnerability affects the mod_proxy module. When the ProxyPass directive is enabled and URL rewrite rules are configured, an attacker can exploit this vulnerability to perform HTTP Request Smuggling attacks. This type of attack exploits discrepancies in the parsing of HTTP requests between proxy and backend servers, potentially leading to unauthorized actions such as information disclosure or unauthorized data access. Affected Versions:

• Apache HTTP Server 2.4.0 to 2.4.61 Attack Method:

1. Identify Target Configuration:

   • The attacker needs to identify if the target system uses an affected version of Apache HTTP Server and has the mod_proxy module enabled.
   • Check if the ProxyPass directive is configured and understand possible URL rewrite rules.

2. Craft Malicious Request:

   • The attacker crafts a specially formatted HTTP request such that parts of the request are parsed differently by the proxy and backend servers.
   • For example, the attacker can use multiple Content-Length headers or a combination of Transfer-Encoding and Content-Length headers to deceive the servers.

3. Send Malicious Request:

   • The crafted malicious request is sent to the target server. The request is parsed inconsistently by the proxy and backend servers, resulting in a request smuggling attack.

4. Exploit Smuggled Request:

   • Use the smuggled request to perform further attacks, such as session hijacking, cross-site scripting (XSS), or command injection. Mitigation:

• Upgrade to Apache HTTP Server 2.4.62 or later to fix this vulnerability.
• Ensure proper configuration of proxy settings to avoid insecure URL rewrite rules.
• Review and strengthen proxy configurations to ensure consistent parsing between proxy and backend servers. CVE-2024-40898

Description: CVE-2024-40898 is another high-severity vulnerability affecting Apache HTTP Server versions 2.4.0 to 2.4.61. This vulnerability involves the mod_ssl module. When the SSLVerifyClient directive is configured in a specific manner, there is a risk of authentication bypass. An attacker can exploit this vulnerability to bypass client authentication, leading to unauthorized access to the system or sensitive information.