CVE-2020-8794
critical
CVSS v3
—
CVSS v2
—
VIR risk
9.5
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-8794
Vendor advisory: arch — https://security.archlinux.org/ASA-202002-13
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 6.6.4p1-1 | |
| debian | bookworm | fixed | 6.6.4p1-1 |
| debian | bullseye | fixed | 6.6.4p1-1 |
| debian | forky | fixed | 6.6.4p1-1 |
| debian | sid | fixed | 6.6.4p1-1 |
| debian | trixie | fixed | 6.6.4p1-1 |
References
Verify integrity in audit chain (admin only). AS-IS.