Web Application Firewalls (WAFs) can be configured to inspect incoming HTTP headers. Rules can be written to drop requests that contain suspicious or malformed Range headers before they ever reach the Squid service. The Importance of Patch Management
HTTP/1.1 200 OK X-Cache-Key: /popular/page.html Content-Type: text/html Content-Length: 47 squid 4.14 exploit
An attacker can leak sensitive information from the proxy’s memory. In a worst-case scenario, this can be chained with other flaws to achieve Remote Code Execution (RCE) as the "nobody" user. CVE-2020-25097: HTTP Request Smuggling Web Application Firewalls (WAFs) can be configured to
This article explores the technical anatomy of the Squid 4.14 exploit chain, focusing on (HTTP Request Smuggling) and CVE-2020-15811 (HTTP Header Injection). By the end, you will understand how an attacker can poison a cache, steal user data, and pivot into internal networks. In a worst-case scenario, this can be chained