Race condition in mail.local in NetBSD - CVE-2016-6253
Published: July 22, 2016 / Updated: September 14, 2018
Vulnerability identifier: #VU196
CSH Severity: High
CVSS v4.0: 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/E:A/U:Amber
CVE-ID: CVE-2016-6253
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vendor: NetBSD Foundation, Inc
Affected software:
NetBSD
NetBSD
Detailed vulnerability description
The vulnerability allows a local user to obtain root privileges on the target system.
The vulnerability exists due to an access control error in NetBSD. A local user can exploit the race condition in mail.local(8) to change the ownership of arbitrary files or append arbitrary data to arbitrary files to gain root privileges on the target system.
Successful exploitation of this vulnerability may result in root access via local system.
The vulnerability exists due to an access control error in NetBSD. A local user can exploit the race condition in mail.local(8) to change the ownership of arbitrary files or append arbitrary data to arbitrary files to gain root privileges on the target system.
Successful exploitation of this vulnerability may result in root access via local system.
How to mitigate CVE-2016-6253
Solution for this vulnerability is avaliable at:
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc