Improper input validation in NetBSD - #VU8451
Published: September 15, 2017
Vulnerability identifier: #VU8451
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: NetBSD Foundation, Inc
Affected software:
NetBSD
NetBSD
Detailed vulnerability description
The vulnerability allows a local attacker to gain elevated privileges or cause denial of service on the target system.
The weakness exists due to improper handling of openat() system calls using a file descriptor that does not name a directory as the starting point for a path lookup. A local attacker can make a specially crafted openat() system calls, trigger a vnode reference leak in the kernel and gain elevated privileges or cause a DoS condition.
The weakness exists due to improper handling of openat() system calls using a file descriptor that does not name a directory as the starting point for a path lookup. A local attacker can make a specially crafted openat() system calls, trigger a vnode reference leak in the kernel and gain elevated privileges or cause a DoS condition.
Remediation
Install update from vendor's website.