Nagios XI OS Command Injection

[ Why it matters ]Priority signals

• Exploited in the wild: on CISA's Known Exploited Vulnerabilities list since 2022-01-18
• EPSS: 74% chance of exploitation in the next 30 days (higher than 99% of CVEs)

[ Description ]Official 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/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.

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

[ Fixes ]Fixes and patches

CISA required action (US federal deadline 1 Feb 2022): Apply updates per vendor instructions.

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
• packetstormsecurity.com/files/170924/Nagios-XI-5.7.5-Remote-Code-Execution.htmlExploitThird Party AdvisoryVDB Entry
• assets.nagios.com/downloads/nagiosxi/versions.phpProduct
• github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.mdExploitThird Party Advisory
• www.fastly.com/blog/anatomy-of-a-command-injection-cve-2021-25296-7-8-with-metasploit-m…ExploitThird Party Advisory
• www.cisa.gov/known-exploited-vulnerabilities-catalogUS Government Resource