HAProxy < 2.0.31 - HTTP Request Smuggling via Empty Header Field Names
Title source: llmExploitation Summary
EIP tracks 1 public exploit for CVE-2023-25725. PoCs published by krillingws.
AI-analyzed exploit summary This repository contains only a Docker Compose file setting up a lab environment with HAProxy and echo servers, but no actual exploit code or technical details about CVE-2023-25725.
Description
HAProxy before 2.7.3 may allow a bypass of access control because HTTP/1 headers are inadvertently lost in some situations, aka "request smuggling." The HTTP header parsers in HAProxy may accept empty header field names, which could be used to truncate the list of HTTP headers and thus make some headers disappear after being parsed and processed for HTTP/1.0 and HTTP/1.1. For HTTP/2 and HTTP/3, the impact is limited because the headers disappear before being parsed and processed, as if they had not been sent by the client. The fixed versions are 2.7.3, 2.6.9, 2.5.12, 2.4.22, 2.2.29, and 2.0.31.
Exploits (1)
This repository contains only a Docker Compose file setting up a lab environment with HAProxy and echo servers, but no actual exploit code or technical details about CVE-2023-25725.
References (6)
Scores
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H