CVE-2021-32714— Integer Overflow in Chunked Transfer-Encoding
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I. Basic Information for CVE-2021-32714
Vulnerability Information
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Vulnerability Title
Integer Overflow in Chunked Transfer-Encoding
Source: NVD (National Vulnerability Database)
Vulnerability Description
hyper is an HTTP library for Rust. In versions prior to 0.14.10, hyper's HTTP server and client code had a flaw that could trigger an integer overflow when decoding chunk sizes that are too big. This allows possible data loss, or if combined with an upstream HTTP proxy that allows chunk sizes larger than hyper does, can result in "request smuggling" or "desync attacks." The vulnerability is patched in version 0.14.10. Two possible workarounds exist. One may reject requests manually that contain a `Transfer-Encoding` header or ensure any upstream proxy rejects `Transfer-Encoding` chunk sizes greater than what fits in 64-bit unsigned integers.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
整数溢出或超界折返
Source: NVD (National Vulnerability Database)
Vulnerability Title
hyperium hyper 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
hyperium hyper是开源的Rust 的 HTTP 库。旨在成为库和应用程序的构建块。 hyperium hyper存在输入验证错误漏洞，该漏洞源于hyper 0.14.10版本及之前版本中，hyper 的 HTTP 服务器和客户端代码存在当解码太大的块大小时可能会触发整数溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2021-32714
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- https://github.com/hyperium/hyper/security/advisories/GHSA-5h46-h7hh-c6x9x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2021-32714
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V. Comments for CVE-2021-32714
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