Arch Linux Security Advisory ASA-202009-3 ========================================= Severity: Medium Date : 2020-09-03 CVE-ID : CVE-2020-24553 Package : go Type : cross-site scripting Remote : Yes Link : https://security.archlinux.org/AVG-1215 Summary ======= The package go before version 1.15.1-1 is vulnerable to cross-site scripting. Resolution ========== Upgrade to 1.15.1-1. # pacman -Syu "go>=1.15.1-1" The problem has been fixed upstream in version 1.15.1. Workaround ========== None. Description =========== In Go versions before 1.15.1 and 1.14.8 if the Content-Type header of a Handler was not explicitly set the net/http/cgi and net/http/fcgi packages would default to “text/html”, which could cause a Cross-Site Scripting vulnerability if an attacker can control any part of the contents of a response. Impact ====== A remote attacker is able to execute javascript or create html content by sending specially crafted web content. References ========== https://github.com/golang/go/issues/40928 https://www.redteam-pentesting.de/advisories/rt-sa-2020-004 https://groups.google.com/g/golang-announce/c/8wqlSbkLdPs/m/UccMwBPUBAAJ https://github.com/golang/go/commit/eb07103a083237414145a45f029c873d57037e06 https://security.archlinux.org/CVE-2020-24553