CVE-2021-25296

Nagios XI: OS Command Injection

As of , CVE-2021-25296 in Nagios XI is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.

Exploited
Yes: CISA listed it on 18 January 2022
US federal deadline
1 February 202214 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.72Higher than 99% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
1 Metasploit module
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Nagios XI contains a vulnerability which can lead to OS command injection on the Nagios XI server.

CISA's description

Nagios XI version xi-5.7.5 is affected by OS command injection. The vulnerability exists in the file /usr/local/nagiosxi/html/includes/configwizards/windowswmi/windowswmi.inc.php due to improper sanitization of authenticated user-controlled input by a single HTTP request, which can lead to OS command injection on the Nagios XI server.

The CVE record's description, from mitre

CVE published
15 February 2021
Assigned by
mitre
CVSS
8.8 High (CVSS 3.1, from CISA-ADP)
CWE-78
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-138
Improper Neutralization of Special Elements
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
total

Timeline

  1. The CVE record was published.
  2. CISA added it to its list of exploited vulnerabilities.
  3. The US federal deadline to fix it.

Public exploits

Facts from Metasploit's module list and Exploit-DB's index; we never copy exploit code.

  • Metasploit: Nagios XI 5.5.6 to 5.7.5 - ConfigWizards Authenticated Remote Code Exectionexploit module, rank excellent

Nagios XI: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2019-15949Remote Code ExecutionNagios Nagios XIPatch this weekMetasploit module; EPSS 0.77; verified Exploit-DB entry0.77
CVE-2021-25297OS Command InjectionNagios Nagios XIPatch this weekMetasploit module; EPSS 0.570.57
CVE-2021-25298OS Command InjectionNagios Nagios XIPatch this weekMetasploit module; EPSS 0.750.75

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