CWE-443: DEPRECATED: HTTP response splitting
Learn about CWE-443 (DEPRECATED: HTTP response splitting), its security impact, exploitation methods, and prevention guidelines.
What is DEPRECATED: HTTP response splitting?
• Overview: HTTP response splitting is a vulnerability where an attacker can manipulate HTTP headers by injecting CRLF (Carriage Return Line Feed) sequences, allowing them to craft malicious server responses.
• Exploitation Methods:
- Attackers exploit this by injecting CRLF characters into HTTP headers, causing the server to process multiple responses.
- Common attack patterns include manipulating URL query parameters or HTTP headers to introduce CRLF sequences.
• Security Impact:
- Direct consequences include unauthorized control over HTTP response content.
- Potential cascading effects involve web cache poisoning, cross-site scripting (XSS), or session fixation.
- Business impact can include data breaches, loss of user trust, and compliance violations.
• Prevention Guidelines:
- Specific code-level fixes involve sanitizing and validating input to ensure that CRLF characters are not included in HTTP headers.
- Security best practices include using libraries or frameworks that automatically handle HTTP header encoding.
- Recommended tools and frameworks involve security-focused HTTP libraries and frameworks that guard against response splitting.
Technical Details
Likelihood of Exploit: Not specified
Affected Languages: Not specified
Affected Technologies: Not specified