NULL pointer dereference in OpenBSD - CVE-2016-6350
Published: March 7, 2017 / Updated: August 8, 2020
Vulnerability identifier: #VU39574
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-6350
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: OpenBSD
Affected software:
OpenBSD
OpenBSD
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via a sysctl call with a path starting with 10,9.
How to mitigate CVE-2016-6350
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/kern/vfs_subr.c.diff?r1=1.248&r2=1.249
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/sys/tmpfs/tmpfs_vfsops.c.diff?r1=1.9&r2=1.10
- http://www.openwall.com/lists/oss-security/2016/07/26/6
- http://www.openwall.com/lists/oss-security/2016/07/26/8
- http://www.securityfocus.com/bid/92140