CVE-2020-7247

critical KEV

Published 2022-03-25 · Modified 2022-03-25

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

10.0

Description

smtp_mailaddr in smtp_session.c in OpenSMTPD, as used in OpenBSD and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session.

CISA KEV

Vendor: OpenBSD
Product: OpenSMTPD
Due date: 2022-04-15

Predictions

Exploit likelihood

99%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-48051 remote openbsd verified

Marco Ivaldi · 2020-02-11

OpenSMTPD 6.4.0 < 6.6.1 - Local Privilege Escalation + Remote Code Execution

Source code queued for fetch — refresh in a moment.

EDB-47984 remote linux verified

1F98D · 2020-01-30

OpenSMTPD 6.6.1 - Remote Code Execution

Source code queued for fetch — refresh in a moment.

EDB-48038 remote linux verified

Metasploit · 2020-02-10

OpenSMTPD - MAIL FROM Remote Code Execution (Metasploit)

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_unix/smtp/opensmtpd_mail_from_rce rank 600

OpenSMTPD MAIL FROM Remote Code Execution

Source fetch failed: fetch_error — view the original via the link above.

OS impact

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`6.6.2p1-1`

Debian Fixed 5 releases

Version	Status	Fixed in
trixie	Fixed	`6.6.2p1-1`
sid	Fixed	`6.6.2p1-1`
forky	Fixed	`6.6.2p1-1`
bullseye	Fixed	`6.6.2p1-1`
bookworm	Fixed	`6.6.2p1-1`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.