Openbsd: >> Opensmtpd Security Vulnerabilities
CVE-2020-7247
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.
Known exploited
CVSS Score
9.8
EPSS Score
0.941
Published
2020-01-29
Use-after-free vulnerability in OpenSMTPD before 5.7.2 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via vectors involving req_ca_vrfy_smtp and req_ca_vrfy_mta.
CVSS Score
9.8
EPSS Score
0.101
Published
2017-10-16
OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.
CVSS Score
5.0
EPSS Score
0.016
Published
2014-05-27