Summary: Recently there was a discovery of vulnerabaility tracked as (CVE-2020-7247) in OpenSMTPD, OpenBSD’s mail server. This vulnerability was exploitable since May 2018 (commit a8e222352f, “switch smtpd to new grammar”) that allows an attacker to execute arbitrary shell commands, as root: >> either locally, in OpenSMTPD’s default configuration (that listens on loopback interface and only … Continue reading “OpenBSD OpenSMTPD Remote Command Execution Vulnerability (CVE-2020-7247)”