CVE-2020-35680
high
CVSS v3
—
CVSS v2
—
VIR risk
8.0
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-35680
Vendor advisory: arch — https://security.archlinux.org/ASA-202101-18
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 6.8.0p2-1 | |
| debian | bookworm | fixed | 6.8.0p2-1 |
| debian | bullseye | fixed | 6.8.0p2-1 |
| debian | forky | fixed | 6.8.0p2-1 |
| debian | sid | fixed | 6.8.0p2-1 |
| debian | trixie | fixed | 6.8.0p2-1 |
References
Verify integrity in audit chain (admin only). AS-IS.