Vulnerability Monitor

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CVE-2020-13977

Nagios 4.4.5 allows an attacker, who already has administrative access to change the "URL for JSON CGIs" configuration setting, to modify the Alert Histogram and Trends code via crafted versions of the archivejson.cgi, objectjson.cgi, and statusjson.cgi files. NOTE: this vulnerability has been mistakenly associated with CVE-2020-1408.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 4.9, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction . The vulnerability impacts integrity (unauthorized modifications), for affected systems. Impacting 2 products from nagios, from fedoraproject organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-06-09T14:15:10.063

Last Modified

2024-11-21T05:02:16.810

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.9 (MEDIUM)

CVSSv2 Vector

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

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

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-829

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	nagios	nagios	4.4.5	Yes
Operating System	fedoraproject	fedora	32	Yes
Operating System	fedoraproject	fedora	33	Yes
Operating System	fedoraproject	fedora	34	Yes

References

https://anhtai.me/nagios-core-4-4-5-url-injection/ Exploit, Third Party Advisory ([email protected])
https://github.com/sawolf/nagioscore/tree/url-injection-fix Product, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P6NHNG2SJAM6DXVTXQH3AOJ4WQVKJUE/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H7T6MSDWMBJEVVFSOK7DOYJJWDAFQCEQ/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUEIABR4Y6L5J5MZDFWU46ZWXMJO64U3/ ([email protected])
https://www.nagios.org/projects/nagios-core/history/4x/ Release Notes, Vendor Advisory ([email protected])
https://anhtai.me/nagios-core-4-4-5-url-injection/ Exploit, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/sawolf/nagioscore/tree/url-injection-fix Product, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5P6NHNG2SJAM6DXVTXQH3AOJ4WQVKJUE/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/H7T6MSDWMBJEVVFSOK7DOYJJWDAFQCEQ/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUEIABR4Y6L5J5MZDFWU46ZWXMJO64U3/ (af854a3a-2127-422b-91ae-364da2661108)
https://www.nagios.org/projects/nagios-core/history/4x/ 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.