Vulnerabilities (CVE)

Filtered by vendor Opensmtpd Subscribe
Filtered by product Opensmtpd
CVE Vendors Products Updated CVSS v2 CVSS v3
CVE-2020-35679 2 Fedoraproject, Opensmtpd 2 Fedora, Opensmtpd 2022-04-26 5.0 MEDIUM 7.5 HIGH
smtpd/table.c in OpenSMTPD before 6.8.0p1 lacks a certain regfree, which might allow attackers to trigger a "very significant" memory leak via messages to an instance that performs many regex lookups.
CVE-2020-8793 3 Canonical, Fedoraproject, Opensmtpd 3 Ubuntu Linux, Fedora, Opensmtpd 2022-01-01 4.7 MEDIUM 4.7 MEDIUM
OpenSMTPD before 6.6.4 allows local users to read arbitrary files (e.g., on some Linux distributions) because of a combination of an untrusted search path in makemap.c and race conditions in the offline functionality in smtpd.c.
CVE-2020-35680 2 Fedoraproject, Opensmtpd 2 Fedora, Opensmtpd 2021-05-26 5.0 MEDIUM 7.5 HIGH
smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a crafted pattern of client activity, because the filter state machine does not properly maintain the I/O channel between the SMTP engine and the filters layer.
CVE-2020-8794 1 Opensmtpd 1 Opensmtpd 2021-05-04 10.0 HIGH 9.8 CRITICAL
OpenSMTPD before 6.6.4 allows remote code execution because of an out-of-bounds read in mta_io in mta_session.c for multi-line replies. Although this vulnerability affects the client side of OpenSMTPD, it is possible to attack a server because the server code launches the client code during bounce handling.