Openbsd Opensmtpd vulnerabilities

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Published CVEs affecting Openbsd Opensmtpd: 1 record(s), with affected versions and fixes.
cpe:2.3:a:openbsd:opensmtpd

CVE-2020-7247 Critical · 9.8 KEV Urgent · 83 Public exploit CWE-78 Jan 29, 2020

OpenSMTPD Remote Code Execution Vulnerability

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.