CVE-2020-11709 : Exploit Details and Defense Strategies
Learn about CVE-2020-11709, a vulnerability in cpp-httplib up to version 0.5.8 allowing CRLF injection and HTTP response splitting, potentially leading to security risks. Find mitigation steps here.
This CVE-2020-11709 article provides insights into a vulnerability in cpp-httplib through version 0.5.8 that could lead to CRLF injection and HTTP response splitting.
Understanding CVE-2020-11709
What is CVE-2020-11709?
cpp-httplib through 0.5.8 allows CRLF injection and HTTP response splitting due to unfiltered \r\n in parameters passed into certain functions.
The Impact of CVE-2020-11709
This vulnerability could be exploited in specific contexts to manipulate HTTP responses and potentially launch attacks like cross-site scripting (XSS) or session hijacking.
Technical Details of CVE-2020-11709
Vulnerability Description
The issue arises from the lack of filtering for \r\n in parameters provided to set_redirect and set_header functions in cpp-httplib.
Affected Systems and Versions
- Product: cpp-httplib
- Vendor: N/A
- Versions affected: up to 0.5.8
Exploitation Mechanism
Attackers can inject malicious CRLF sequences into HTTP headers, potentially leading to various security threats.
Mitigation and Prevention
Immediate Steps to Take
- Update cpp-httplib to a patched version that filters \r\n in parameters.
- Monitor and filter user input to prevent CRLF injection.
Long-Term Security Practices
- Regularly update software and libraries to address known vulnerabilities.
- Implement secure coding practices to sanitize user inputs effectively.
Patching and Updates
Apply patches and updates provided by cpp-httplib to mitigate the vulnerability.