CVE-2020-7247

 

Published at: - 29-01-2020 05:15

Last modified: - 29-04-2022 03:24

Total changes: - 6

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://github.com/openbsd/src/commit/9dcfda045474d8903224d175907bfc29761dcb45
• http://www.openwall.com/lists/oss-security/2020/01/28/3
• https://www.openbsd.org/security.html
• http://packetstormsecurity.com/files/156137/OpenBSD-OpenSMTPD-Privilege-Escalation-Code-Execution.html
• 20200129 [SECURITY] [DSA 4611-1] opensmtpd security update-Mailing List, Third Party Advisory
• DSA-4611-Third Party Advisory
• http://packetstormsecurity.com/files/156145/OpenSMTPD-6.6.2-Remote-Code-Execution.html
• VU#390745-Third Party Advisory, US Government Resource
• 20200131 LPE and RCE in OpenSMTPD (CVE-2020-7247)-Mailing List, Third Party Advisory
• http://packetstormsecurity.com/files/156249/OpenSMTPD-MAIL-FROM-Remote-Code-Execution.html
• http://packetstormsecurity.com/files/156295/OpenSMTPD-6.6.1-Local-Privilege-Escalation.html
• USN-4268-1-Third Party Advisory
• FEDORA-2020-b92d7083ca-Mailing List, Third Party Advisory
• http://packetstormsecurity.com/files/162093/OpenBSD-OpenSMTPD-6.6-Remote-Code-Execution.html

 

Keywords

NVD

 

CVE-2020-7247

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures