RUSTSEC-2020-0031

HTTP Request smuggling through malformed Transfer Encoding headers

Reported

June 16, 2020

Issued

October 1, 2020 (last modified: June 13, 2023)

Package

tiny_http (crates.io)

Type

Vulnerability

Keywords

#http #request-smuggling

Aliases

References

https://github.com/tiny-http/tiny-http/issues/173

CVSS Score

6.5 MEDIUM

CVSS Details

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: Low
Availability: None

CVSS Vector

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

Patched

>=0.8.0
^0.6.3

Description

HTTP pipelining issues and request smuggling attacks are possible due to incorrect Transfer encoding header parsing.

It is possible conduct HTTP request smuggling attacks (CL:TE/TE:TE) by sending invalid Transfer Encoding headers.

By manipulating the HTTP response the attacker could poison a web-cache, perform an XSS attack, or obtain sensitive information from requests other than their own.

Advisory available under CC0-1.0 license.