Privilege escalation in Nagios
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2016-9566 |
| CWE-ID | CWE-61 |
| Exploitation vector | Local |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Nagios Server applications / Other server solutions |
| Vendor | nagios.org |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Symlink attack
EUVDB-ID: #VU1344
Risk: Low
CVSSv3.1: 7.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2016-9566
CWE-ID:
CWE-61 - UNIX Symbolic Link (Symlink) Following
Exploit availability: Yes
DescriptionThe 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.
MitigationNagios: 4.2.0 - 4.2.3
External linkshttp://www.nagios.org/projects/nagios-core/history/4x/
http://legalhackers.com/advisories/Nagios-Exploit-Root-PrivEsc-CVE-2016-9566.html
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
