RCE in Nagios Xi
CVE-2021-40345
An issue was discovered in Nagios XI 5.8.5. In the Manage Dashlets section of the Admin panel, an administrator can upload ZIP files. A command injection (within the name of the first file in the archive) allows an attacker to execute system commands.
Vulnerability class: Command Injection (OS Command Injection)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.227 (97.7th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.227 · newest: 0.227 · change: 0.000
Affected products
- Nagios Xi — versions 5.8.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT (Release Notes, Vendor Advisory)
- synacktiv.com (Not Applicable)
- github.com/ArianeBlow/NagiosXI-EmersonFI/blob/main/README.md (Exploit, Third Party Advisory)
- www.synacktiv.com/sites/default/files/2021-10/Nagios_XI_multiple_vulnerabilitie… (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-40345?
- CVE-2021-40345 is a high-severity vulnerability in Nagios Xi, classified under Command Injection. CVSS score: 7.2/10. Published 2021-10-26.
- How severe is CVE-2021-40345?
- High severity. CVSS v3 base score is 7.2 out of 10.
- Is CVE-2021-40345 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.