CVE-2021-22960

La función parse en llhttp versiones anteriores a 2.1.4 y versiones anteriores a 6.0.6. ignora las extensiones chunk cuando analiza el cuerpo de las peticiones chunked. Esto conlleva a un Contrabando de Peticiones HTTP (HRS) bajo determinadas condiciones

An HTTP Request Smuggling (HRS) vulnerability was found in the llhttp library, used by Node.JS. During the parsing of chunked messages, the chunk size parameter was not validated properly. 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.