Input validation error in FreeBSD - #VU20352
Published: August 21, 2019
Vulnerability identifier: #VU20352
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to incompatibility of firewall rules created with older versions of ipfw(8) utility that support jail keyword. The issue results in rules with the jail keyword are not applied, leading to potential unauthorized access to the services, protected by the firewall rules.
Affected software
FreeBSD
Remediation
Install updates from vendor's website.