Vulnerability in Nagios
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.027 (85.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Nagios — versions 4.4.5
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- anhtai.me/nagios-core-4-4-5-url-injection/ (Exploit, Third Party Advisory)
- www.nagios.org/projects/nagios-core/history/4x/ (Release Notes, Vendor Advisory)
- github.com/sawolf/nagioscore/tree/url-injection-fix (Product, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-13977?
- CVE-2020-13977 is a medium-severity vulnerability in Nagios, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 4.9/10. Published 2020-06-09.
- How severe is CVE-2020-13977?
- Medium severity. CVSS v3 base score is 4.9 out of 10.
- Is CVE-2020-13977 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.