CVE-2020-11724 : Exploit Details and Defense Strategies

An issue was discovered in OpenResty before 1.15.8.4 that allows HTTP request smuggling through ngx_http_lua_subrequest.c, as demonstrated by the ngx.location.capture API.

Understanding CVE-2020-11724

This CVE involves a vulnerability in OpenResty that could lead to HTTP request smuggling.

What is CVE-2020-11724?

CVE-2020-11724 is a security vulnerability found in OpenResty before version 1.15.8.4, allowing for HTTP request smuggling via ngx_http_lua_subrequest.c.

The Impact of CVE-2020-11724

The vulnerability can be exploited to perform HTTP request smuggling, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2020-11724

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The issue in OpenResty before 1.15.8.4 allows HTTP request smuggling, specifically through the ngx_http_lua_subrequest.c file.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions affected: Not applicable

Exploitation Mechanism

The vulnerability can be exploited using the ngx.location.capture API.

Mitigation and Prevention

Protecting systems from CVE-2020-11724 is crucial to maintaining security.

Immediate Steps to Take

Update OpenResty to version 1.15.8.4 or later.
Monitor for any unauthorized access or unusual activities.

Long-Term Security Practices

Regularly update and patch software to prevent vulnerabilities.
Implement network security measures to detect and block malicious traffic.

Patching and Updates

Ensure timely installation of security patches and updates to mitigate the risk of exploitation.