A vulnerability was found in 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. Reference: https://seclists.org/fulldisclosure/2020/Jan/49 https://www.openwall.com/lists/oss-security/2020/01/28/3 https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45
Created opensmtpd tracking bugs for this issue: Affects: epel-all [bug 1797597] Affects: fedora-all [bug 1797596]
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.