Multiple vulnerabilities in Nagios XI



Published: 2020-07-23 | Updated: 2020-08-08
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-15901
CVE-2020-15902
CWE-ID CWE-20
CWE-79
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Nagios XI
Server applications / Other server solutions

Vendor nagios.org

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU34128

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15901

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

In Nagios XI before 5.7.3, ajaxhelper.php allows remote authenticated attackers to execute arbitrary commands via cmdsubsys.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Nagios XI: 5.7.0 - 5.7.1

External links

http://www.nagios.com/downloads/nagios-xi/change-log/
http://www.nagios.com/products/security/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Cross-site scripting

EUVDB-ID: #VU34129

Risk: Low

CVSSv3.1: 5.3 [AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-15902

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks via the link url option.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Update to version 5.7.2.

Vulnerable software versions

Nagios XI: 5.7.0 - 5.7.1

External links

http://www.nagios.com/downloads/nagios-xi/change-log/
http://www.nagios.com/products/security/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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