Privilege escalation in Elastic Kibana
CVE-2021-37938
It was discovered that on Windows operating systems specifically, Kibana was not validating a user supplied path, which would load .pbf files. Because of this, a malicious user could arbitrarily traverse the Kibana host to load internal files ending in the .pbf extension. Thanks to Dominic Couture for finding this vulnerability.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Elastic Kibana — versions All versions from 7.9.0 through 7.15.1
Weakness classification (CWE)
References
- discuss.elastic.co/t/kibana-7-15-2-security-update/288923 (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-37938?
- CVE-2021-37938 is a medium-severity vulnerability in Elastic Kibana, classified under Improper Privilege Management. CVSS score: 4.3/10. Published 2021-11-18.
- How severe is CVE-2021-37938?
- Medium severity. CVSS v3 base score is 4.3 out of 10.