Vulnerability Monitor

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CVE-2018-13457

qh_echo in Nagios Core 4.4.1 and earlier is prone to a NULL pointer dereference vulnerability, which allows attackers to cause a local denial-of-service condition by sending a crafted payload to the listening UNIX socket.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity though user interaction is required and does not require pre-existing privileges . The vulnerability impacts 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

2018-07-12T18:29:00.467

Last Modified

2024-11-21T03:47:07.590

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 5.5 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-476

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nagios	nagios_core	≤ 4.4.1	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html ([email protected])
https://gist.github.com/fakhrizulkifli/87cf1c1ad403b4d40a86d90c9c9bf7ab Exploit, Third Party Advisory ([email protected])
https://knowledge.opsview.com/v5.3/docs/whats-new Third Party Advisory ([email protected])
https://knowledge.opsview.com/v5.4/docs/whats-new Third Party Advisory ([email protected])
https://www.exploit-db.com/exploits/45082/ Exploit, Third Party Advisory, VDB Entry ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00014.html (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00022.html (af854a3a-2127-422b-91ae-364da2661108)
https://gist.github.com/fakhrizulkifli/87cf1c1ad403b4d40a86d90c9c9bf7ab Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://knowledge.opsview.com/v5.3/docs/whats-new Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://knowledge.opsview.com/v5.4/docs/whats-new Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/45082/ Exploit, Third Party Advisory, VDB Entry (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.