CVE-2020-7247

opensmtpd: smtp_mailaddr in smtp_session.c in OpenSMTPD 6.6, as used in OpenBSD 6.6 and other products, allows remote attackers...

CVE-2020-7247 is fixed in opensmtpd on 1 platform by opensmtpd 6.0.3p1-1ubuntu0.1 (version 6.0.3p1-1ubuntu0.1), released January 29, 2020. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 25, 2022. Patch Radar priority: Patch now.

Patch nowCISA KEV
CVSS
n/a
High
Exploitation
Exploited
Listed by CISA
CISA KEV
Mar 25, 2022
Federal due date Apr 15, 2022
EPSS
0.9897
99th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
opensmtpd · Ubuntu 18.04.6 LTS (bionic) 6.0.3p1-1ubuntu0.1 opensmtpd 6.0.3p1-1ubuntu0.1 Jan 29, 2020

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