Security restrictions bypass in FreeBSD - CVE-2020-7468
Published: September 16, 2020
Vulnerability identifier: #VU46743
CSH Severity: Medium
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-7468
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to escalate privileges on the system.
The vulnerability exists due to an error in ftpd(8) sandbox implementation, combined with capabilities available to authenticated FTP users. A remote FTP user can bypass restrictions, configured with ftpchroot(5) and gain privileged access to the system.
Note, this vulnerability cannot be exploited by users with anonymous access to FTP server.
Affected software
FreeBSD
How to mitigate CVE-2020-7468
Install updates from vendor's website.