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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-7247 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html CVE, MITRE Exploit  Third Party Advisory  VDB Entry 
http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html CVE, MITRE Broken Link  Third Party Advisory  VDB Entry 
http://seclists.org/fulldisclosure/2020/Jan/49 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
http://www.openwall.com/lists/oss-security/2020/01/28/3 CVE, MITRE Exploit  Mailing List  Third Party Advisory 
https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45 CVE, MITRE Patch 
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPH4QU4DNVHA7ACFXMYFCEP5PSXXPN4E/ CVE, MITRE Mailing List  Third Party Advisory 
https://seclists.org/bugtraq/2020/Jan/51 CVE, MITRE Mailing List  Third Party Advisory 
https://usn.ubuntu.com/4268-1/ CVE, MITRE Third Party Advisory 
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-7247 CISA-ADP
https://www.debian.org/security/2020/dsa-4611 CVE, MITRE Mailing List  Third Party Advisory 
https://www.kb.cert.org/vuls/id/390745 CVE, MITRE Third Party Advisory  US Government Resource 
https://www.openbsd.org/security.html CVE, MITRE Patch  Vendor Advisory 

This CVE is in CISA's Known Exploited Vulnerabilities Catalog

Reference CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements.

Vulnerability Name Date Added Due Date Required Action
OpenSMTPD Remote Code Execution Vulnerability 03/25/2022 04/15/2022 Apply updates per vendor instructions.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-755 Improper Handling of Exceptional Conditions cwe source acceptance level NIST   CISA-ADP  
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

23 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-7247
NVD Published Date:
01/29/2020
NVD Last Modified:
10/21/2025
Source:
MITRE