Privilege escalation in NetBSD - #VU11625
Published: April 10, 2018 / Updated: April 10, 2018
Vulnerability identifier: #VU11625
CSH Severity: Low
CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to gain elevated privileges on the target system.
The weakness exists due to a mistake the Xen-amd64 port of NetBSD, where iopl was unintentionally set to ring3. A local attacker can gain elevated privileges and read from and write to the CPU's I/O ports.
The weakness exists due to a mistake the Xen-amd64 port of NetBSD, where iopl was unintentionally set to ring3. A local attacker can gain elevated privileges and read from and write to the CPU's I/O ports.
Affected software
NetBSD
Remediation
Install update from vendor's website.