CVE-2021-22959

El parser en acepta peticiones con un espacio (SP) justo después del nombre del encabezado antes de los dos puntos. Esto puede conllevar a un contrabando de peticiones HTTP (HRS) en llhttp versiones anteriores a v2.1.4 y versiones anteriores a v6.0.6

An HTTP Request Smuggling (HRS) vulnerability was found in the llhttp library, used by Node.JS. Spaces as part of the header names were accepted as valid. In situations where HTTP conversations are being proxied (such as proxy, reverse-proxy, load-balancer), an attacker can use this flaw to inject arbitrary messages through the proxy. The highest threat from this vulnerability is to confidentiality and integrity.

An update that fixes 7 vulnerabilities is now available. This update for nodejs12 fixes the following issues. Fixed HTTP Request Smuggling due to spaced in headers. Fixed HTTP Request Smuggling when parsing the body. Fixed arbitrary file creation and overwrite in nodejs-tar. Fixed arbitrary file creation and overwrite in nodejs-tar. Fixed arbitrary code execution and file creation and overwrite in nodejs-tar. Fixed symling following vulnerability in nodejs-arborist. Fixed symling following vulnerability in nodejs-arborist. This update was imported from the SUSE:SLE-15-SP2:Update update project.