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httpd

Faulty input validation in the core of Apache allows malicious or exploitable backend/content generators to split HTTP responses.

This issue affects Apache HTTP Server: through 2.4.58.

CVE-2023-38709 is a vulnerability identified in the Apache HTTP Server, specifically affecting versions up to 2.4.58. The root cause is faulty input validation within the core server code that processes HTTP responses. This flaw allows malicious or exploitable backend or content generators to perform HTTP response splitting attacks. HTTP response splitting occurs when an attacker injects CRLF (carriage return and line feed) characters into HTTP headers, causing the server to interpret a single HTTP response as multiple responses. This can lead to a variety of attacks including cache poisoning, cross-site scripting (XSS), web cache deception, and session fixation. The vulnerability does not require authentication or user interaction, and can be exploited remotely over the network, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). The CVSS score of 7.3 reflects a high severity level due to the potential impact on confidentiality, integrity, and availability. Although no public exploits have been reported yet, the widespread deployment of Apache HTTP Server makes this vulnerability a significant risk. The CWE-1284 classification relates to improper input validation leading to HTTP response splitting. The vulnerability was reserved in July 2023 and published in April 2024, but no official patch links are currently provided, indicating that organizations must monitor Apache advisories closely for updates. Until patched, mitigation strategies should focus on input sanitization and network-level protections.

Detailed information about CVE-2023-38709: HTTP response splitting in Apache Software Foundation Apache HTTP Server affecting Apache Software Foundation Apache 

CVE-2023-38709: HTTP response splitting in Apache Software Foundation Apache HTTP Server - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2023-38709: HTTP response splitting in Apache Software Foundation Apache HTTP Server

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