一、 漏洞 CVE-2021-21299 基础信息
漏洞标题
多个 Transfer-Encoding 头部会导致请求主体被误解
来源：AIGC 神龙大模型
漏洞描述信息
多个 Transfer-Encoding 头会误解请求主体
来源：AIGC 神龙大模型
CVSS信息
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
来源：AIGC 神龙大模型
漏洞类别
N/A
来源：AIGC 神龙大模型
漏洞标题
Multiple Transfer-Encoding headers misinterprets request payload
来源：美国国家漏洞数据库 NVD
漏洞描述信息
hyper is an open-source HTTP library for Rust (crates.io). In hyper from version 0.12.0 and before versions 0.13.10 and 0.14.3 there is a vulnerability that can enable a request smuggling attack. The HTTP server code had a flaw that incorrectly understands some requests with multiple transfer-encoding headers to have a chunked payload, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that understands the request payload boundary differently can result in "request smuggling" or "desync attacks". To determine if vulnerable, all these things must be true: 1) Using hyper as an HTTP server (the client is not affected), 2) Using HTTP/1.1 (HTTP/2 does not use transfer-encoding), 3) Using a vulnerable HTTP proxy upstream to hyper. If an upstream proxy correctly rejects the illegal transfer-encoding headers, the desync attack cannot succeed. If there is no proxy upstream of hyper, hyper cannot start the desync attack, as the client will repair the headers before forwarding. This is fixed in versions 0.14.3 and 0.13.10. As a workaround one can take the following options: 1) Reject requests that contain a `transfer-encoding` header, 2) Ensure any upstream proxy handles `transfer-encoding` correctly.
来源：美国国家漏洞数据库 NVD
CVSS信息
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
来源：美国国家漏洞数据库 NVD
漏洞类别
HTTP请求的解释不一致性(HTTP请求私运)
来源：美国国家漏洞数据库 NVD
漏洞标题
hyper crate for Rust 环境问题漏洞
来源：中国国家信息安全漏洞库 CNNVD
漏洞描述信息
hyper crate for Rust是一款基于Rust的HTTP库。 hyper crate for Rust 中存在环境问题漏洞，该漏洞源于网络系统或产品的环境因素不合理。
来源：中国国家信息安全漏洞库 CNNVD
CVSS信息
N/A
来源：中国国家信息安全漏洞库 CNNVD
漏洞类别
环境问题
来源：中国国家信息安全漏洞库 CNNVD
二、漏洞 CVE-2021-21299 的公开POC
# POC 描述 源链接 神龙链接
三、漏洞 CVE-2021-21299 的情报信息