This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2020-35680 →

DEBIAN-CVE-2020-35680

smtpd/lka_filter.c in OpenSMTPD before 6.8.0p1, in certain configurations, allows remote attackers to cause a denial of service (NULL pointer derefere...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 opensmtpd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0p2-1"}]}]

Debian:13 opensmtpd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0p2-1"}]}]

Debian:14 opensmtpd

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.8.0p2-1"}]}]

References

advisory security-tracker.debian.org