CVE-2019-16276 – golang: HTTP/1.1 headers with a space before the colon leads to filter bypass or request smuggling

https://notcve.org/view.php?id=CVE-2019-16276

Go before 1.12.10 and 1.13.x before 1.13.1 allow HTTP Request Smuggling. Go versiones anteriores a 1.12.10 y versiones 1.13.x anteriores a 1.13.1, permitir el Trafico No Autorizado de Peticiones HTTP. It was discovered that net/http (through net/textproto) in golang does not correctly interpret HTTP requests where an HTTP header contains spaces before the colon. This could be abused by an attacker to smuggle HTTP requests when a proxy or a firewall is placed behind a server implemented in Go or to filter bypasses depending on the specific network configuration. • http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00043.html http://lists.opensuse.org/opensuse-security-announce/2019-11/msg00044.html https://access.redhat.com/errata/RHSA-2020:0101 https://access.redhat.com/errata/RHSA-2020:0329 https://access.redhat.com/errata/RHSA-2020:0652 https://github.com/golang/go/issues/34540 https://groups.google.com/forum/#%21msg/golang-announce/cszieYyuL9Q/g4Z7pKaqAgAJ https://lists.debian.org/debian-lts-announce/2021/03/msg00014.html https&# • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') •