Vulnerability Monitor

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CVE-2018-8733

Authentication bypass vulnerability in the core config manager in Nagios XI 5.2.x through 5.4.x before 5.4.13 allows an unauthenticated attacker to make configuration changes and leverage an authenticated SQL injection vulnerability.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 1 product from nagios organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2018-04-18T00:29:00.317

Last Modified

2024-11-21T04:14:13.820

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-89

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nagios	nagios_xi	< 5.4.13	Yes

References

https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT Release Notes, Vendor Advisory ([email protected])
https://blog.redactedsec.net/exploits/2018/04/26/nagios.html Exploit, Technical Description, Third Party Advisory ([email protected])
https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f Third Party Advisory ([email protected])
https://www.exploit-db.com/exploits/44560/ Exploit, Third Party Advisory, VDB Entry ([email protected])
https://www.exploit-db.com/exploits/44969/ Exploit, Third Party Advisory, VDB Entry ([email protected])
https://www.nagios.com/downloads/nagios-xi/change-log/ Release Notes, Vendor Advisory ([email protected])
https://assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://blog.redactedsec.net/exploits/2018/04/26/nagios.html Exploit, Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://gist.github.com/caleBot/f0a93b5a98574393e0139104eacc2d0f Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/44560/ Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/44969/ Exploit, Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://www.nagios.com/downloads/nagios-xi/change-log/ Release Notes, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For nagios's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.