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CVE-2020-7247: OpenSMTPD: Unauthenticated Remote Code Execution

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CVE-2020-7247: OpenSMTPD: Unauthenticated Remote Code Execution

Severity
9
CVSS
(AV:N/AC:L/Au:N/C:C/I:C/A:C)
Published
01/29/2020
Created
02/13/2020
Added
02/06/2020
Modified
05/03/2022

Description

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

Solution(s)

  • opensmtpd-cve-2020-7247-rce

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