XXE in Elastic Elasticsearch
CVE-2018-17247
Elasticsearch Security versions 6.5.0 and 6.5.1 contain an XXE flaw in Machine Learning's find_file_structure API. If a policy allowing external network access has been added to Elasticsearch's Java Security Manager then an attacker could send a specially crafted request capable of leaking content of local files on the Elasticsearch node. This could allow a user to access information that they should not have access to.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.014 (69.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Elastic Elasticsearch — versions 6.5.0 and 6.5.1, 6.5.0, 6.5.1
Weakness classification (CWE)
References
- security@elastic.co (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@elastic.co (x_refsource_MISC, Vendor Advisory)
- security@elastic.co (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-17247?
- CVE-2018-17247 is a medium-severity vulnerability in Elastic Elasticsearch, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.9/10. Published 2018-12-20.
- How severe is CVE-2018-17247?
- Medium severity. CVSS v3 base score is 5.9 out of 10.