CVE-2023-38697— protocol-http1 环境问题漏洞

protocol-http1 HTTP Request/Response Smuggling vulnerability

protocol-http1 provides a low-level implementation of the HTTP/1 protocol. RFC 9112 Section 7.1 defined the format of chunk size, chunk data and chunk extension. The value of Content-Length header should be a string of 0-9 digits, the chunk size should be a string of hex digits and should split from chunk data using CRLF, and the chunk extension shouldn't contain any invisible character. However, Falcon has following behaviors while disobey the corresponding RFCs: accepting Content-Length header values that have `+` prefix, accepting Content-Length header values that written in hexadecimal with `0x` prefix, accepting `0x` and `+` prefixed chunk size, and accepting LF in chunk extension. This behavior can lead to desync when forwarding through multiple HTTP parsers, potentially results in HTTP request smuggling and firewall bypassing. This issue is fixed in `protocol-http1` v0.15.1. There are no known workarounds.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

HTTP请求的解释不一致性(HTTP请求私运)

protocol-http1 环境问题漏洞

protocol-http1是一个低级的HTTP/1的实现。 protocol-http1 0.15.1之前版本存在环境问题漏洞，该漏洞源于Falcon违反了RFC规则，导致存在HTTP请求走私和防火墙绕过问题。

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