OpenSMTPD Remote Code Execution Vulnerability (CVE-2020-7247)
Severity: critical · Patch status: patched · Since 2022-03-25 · CVE-2020-7247
smtpmailaddr in smtpsession.c in OpenSMTPD, as used in OpenBSD and other products, allows remote attackers to execute arbitrary commands as root via a crafted SMTP session. CISA added CVE-2020-7247 to its Known Exploited Vulnerabilities catalog on Mar 25, 2022, which means attackers are exploiting it in the wild.
What to do
- Apply updates per vendor instructions.
- US federal agencies must remediate by Apr 15, 2022 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch