XXE in Apache Solr
CVE-2018-8026
This vulnerability in Apache Solr 6.0.0 to 6.6.4 and 7.0.0 to 7.3.1 relates to an XML external entity expansion (XXE) in Solr config files (currency.xml, enumsConfig.xml referred from schema.xml, TIKA parsecontext config file). In addition, Xinclude functionality provided in these config files is also affected in a similar way. The vulnerability can be used as XXE using file/ftp/http protocols in order to read arbitrary local files from the Solr server or the internal network. The manipulated files can be uploaded as configsets using Solr's API, allowing to exploit that vulnerability.
Vulnerability class: XXE (XML External Entity)
EPSS: 0.090 (94.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Solr
- Apache Software Foundation Solr — versions 6.0.0 to 6.6.4, 7.0.0 to 7.3.1
- Netapp Snapcenter
- Netapp Storage_automation_store
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security@apache.org (x_refsource_CONFIRM, Exploit, Issue Tracking, Vendor Advisory)
- security@apache.org (x_refsource_CONFIRM, Third Party Advisory)
- security@apache.org (Vendor Advisory, mailing-list, x_refsource_MLIST, Mailing List)
Frequently asked questions
- What is CVE-2018-8026?
- CVE-2018-8026 is a medium-severity vulnerability in Apache Solr, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 5.5/10. Published 2018-07-05.
- How severe is CVE-2018-8026?
- Medium severity. CVSS v3 base score is 5.5 out of 10.
- Is CVE-2018-8026 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.