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Exploits
ID:4891 - Exploit for Permissions, Privileges, and Access Controls in OpenSMTPD - CVE-2020-8793
ID:4891 - Exploit for Permissions, Privileges, and Access Controls in OpenSMTPD - CVE-2020-8793
Published: November 30, 2020
Vulnerability identifier: #VU25586
Vulnerability risk: Low
CVE-ID: CVE-2020-8793
CWE-ID: CWE-264
Exploitation vector: Local access
Vulnerable software:
OpenSMTPD
OpenSMTPD
Link to public exploit:
Vulnerability description
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to the application does not drop privileges when executing the "/usr/sbin/smtpctl" application with a "-bi" command-line argument. A local user can leverage this behavior and use a specially crafted hardlink to execute arbitrary code on the system with elevated privileges.
Remediation
Install updates from vendor's website.