#VU1344 Symlink attack in Nagios - CVE-2016-9566
Published: December 16, 2016
Vulnerability identifier: #VU1344
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/U:Clear
CVE-ID: CVE-2016-9566
CWE-ID: CWE-61
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vulnerable software:
Nagios
Nagios
Software vendor:
nagios.org
nagios.org
Description
The vulnerability allows a local user obtain elevated privileges on vulnerable system.
The vulnerability exists due to the application handles log files in unsafe manner. A local user with access to Nagios application (nagios account or member of nagios group) can cerate a specially crafted symlink to nagios log file and execute arbitrary command on vulnerable system with root privileges.
Successful exploitation of this vulnerability may allow a local user to obtain full access to vulnerable system.
Remediation
Install the latest version 4.2.4, which fixes the vulnerability.