Vulnerability CVE-2021-25299
Published: 2021-02-15

Description:
Nagios XI version xi-5.7.5 is affected by cross-site scripting (XSS). The vulnerability exists in the file /usr/local/nagiosxi/html/admin/sshterm.php due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal his/her session cookies or it can be chained with the previous bugs to get one-click remote command execution (RCE) on the Nagios XI server.

See advisories in our WLB2 database:
Topic
Author
Date
High
Nagios XI 5.7.5 Remote Code Execution
fs0c-sh
27.02.2021

Type:

CWE-79

 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Nagios -> Nagios xi 

 References:
http://nagios.com
https://assets.nagios.com/downloads/nagiosxi/versions.php
https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md
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