Openbsd Opensmtpd vulnerabilities

3 vulnerabilities

Known vulnerabilities in Openbsd Opensmtpd, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

5CVE-2013-2125debianopensmtpd+1
EPSS score
2.47%
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.9.8CVE-2015-7687debianopensmtpd+3
EPSS score
4.04%
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.10CVE-2020-7247alpineopensmtpd+6KEV
EPSS score
98.97%
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.