CVE-2021-25298
Nagios — Nagios XI OS Command Injection
Nagios · CWE-78 — Operating system command injection · in CISA KEV since 2022-01-18
EVRS 79 of 100 Urgent
Patch This Cycle
Rank 621 of 2,960 tracked
Why it scores 79
Evidence available: 6 of 7 signalsListed in the CISA KEV catalog, and an EPSS probability of 0.736.
- CISA KEVApplied
- RansomwareDid not apply
- Vendor exploitationDid not apply
- EPSSApplied
- Microsoft Exploitability IndexNot applicable
- Pre-patch disclosureNo data
- KEV recencyDid not apply
- CVSSApplied
The band answers “how soon”, not “how bad”. No data for: Pre-patch disclosure. Why some signals show no data
Fix
Patch or fixed version identifiedCISA required action
Fixed in
nagios xi: update to a version newer than 5.7.5
Affected versions
- nagios xi
>= 5.5.6 <= 5.7.5
Remediation
Apply updates per vendor instructions.
Fixed versions from NVD.
Evidence
Each value with its source| Measure | Value | Source |
|---|---|---|
| CVSS base scoreHow severe the flaw is in itself. It does not say how likely an attack is. | 8.8 | NVD |
| FIRST EPSSFIRST's estimate of the chance this is exploited in the next 30 days, and how that ranks against all CVEs. | 0.736 (99.47th pctl) | FIRST EPSS |
| Actively exploitedWhether a source of record has confirmed attacks using it in the wild. | Confirmed | CISA KEV |
| Ransomware campaign useWhether CISA has seen ransomware operators use it. | Unknown or none | CISA KEV |
| CISA remediation deadlineThe date US federal agencies must have fixed or mitigated it. | 2022-02-01 · KEV since 2022 · listed over a year | CISA KEV |
| Public exploit moduleA module existing is not the same as active exploitation. | Public module exists | Metasploit |
| EUVD cross-referenceENISA's record: CVSS 8.8 (v3.1), assigned by mitre. | Listed | ENISA EUVD |
Description
NVDNagios XI version xi-5.7.5 is affected by OS command injection. The vulnerability exists in the file /usr/local/nagiosxi/html/includes/configwizards/cloud-vm/cloud-vm.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.
What CISA says to do
Public module
Metasploit lists a public excellent-rank module for this CVE: Nagios XI 5.5.6 to 5.7.5 - ConfigWizards Authenticated Remote Code Exection (linux/http/nagios_xi_configwizards_authenticated_rce). A module existing is not the same as active exploitation; see metasploit.com.