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CVE-2020-7247

CRITICALCISA KEV

9.8

Description

smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session, as demonstrated by shell metacharacters in a MAIL FROM field. This affects the "uncommented" default configuration. The issue exists because of an incorrect return value upon failure of input validation.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/29/2020

Derniere modification11/7/2025

Sourcekev

Observations honeypot0

CISA KEV

FournisseurOpenBSD

ProduitOpenSMTPD

Nom vulnerabiliteOpenSMTPD Remote Code Execution Vulnerability

Date ajout KEV2022-03-25

Date limite remediation2022-04-15

Utilise dans ransomwareUnknown

Produits affectes

canonical:ubuntu_linuxdebian:debian_linuxfedoraproject:fedoraopenbsd:opensmtpd

Faiblesses (CWE)

CWE-78CWE-755CWE-755

References

http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html(cve@mitre.org)

http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html(cve@mitre.org)

http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html(cve@mitre.org)

http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html(cve@mitre.org)

http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html(cve@mitre.org)

http://seclists.org/fulldisclosure/2020/Jan/49(cve@mitre.org)

http://www.openwall.com/lists/oss-security/2020/01/28/3(cve@mitre.org)

https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45(cve@mitre.org)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/(cve@mitre.org)

https://seclists.org/bugtraq/2020/Jan/51(cve@mitre.org)

https://usn.ubuntu.com/4268-1/(cve@mitre.org)

https://www.debian.org/security/2020/dsa-4611(cve@mitre.org)

https://www.kb.cert.org/vuls/id/390745(cve@mitre.org)

https://www.openbsd.org/security.html(cve@mitre.org)

http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html(af854a3a-2127-422b-91ae-364da2661108)

http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html(af854a3a-2127-422b-91ae-364da2661108)

http://seclists.org/fulldisclosure/2020/Jan/49(af854a3a-2127-422b-91ae-364da2661108)

http://www.openwall.com/lists/oss-security/2020/01/28/3(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45(af854a3a-2127-422b-91ae-364da2661108)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/(af854a3a-2127-422b-91ae-364da2661108)

https://seclists.org/bugtraq/2020/Jan/51(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/4268-1/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2020/dsa-4611(af854a3a-2127-422b-91ae-364da2661108)

https://www.kb.cert.org/vuls/id/390745(af854a3a-2127-422b-91ae-364da2661108)

https://www.openbsd.org/security.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7247(134c704f-9b21-4f2e-91b3-4a467353bcc0)

Correlations IOC

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