CVE-2017-9803: apache software foundation apache solr Improper Authentication
Vulnerability summary
CVE-2017-9803 is a high (CVSS 7.5) Improper Authentication vulnerability in apache software foundation apache solr. EPSS estimates a 2.19% chance of exploitation in the next 30 days, higher than 82.1% of scored vulnerabilities.
Timeline
- 18-09-2017PublishedVulnerability first disclosed.
- 17-09-2024Last modifiedVulnerability information updated.
Description
Apache Solr's Kerberos plugin can be configured to use delegation tokens, which allows an application to reuse the authentication of an end-user or another application. There are two issues with this functionality (when using SecurityAwareZkACLProvider type of ACL provider e.g. SaslZkACLProvider). Firstly, access to the security configuration can be leaked to users other than the solr super user. Secondly, malicious users can exploit this leaked configuration for privilege escalation to further expose/modify private data and/or disrupt operations in the Solr cluster. The vulnerability is fixed from Apache Solr 6.6.1 onwards.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · MavenEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS trend
Probability
2.19%
Chance of exploitation in the next 30 days
Percentile
82%
Versus all other CVEs
30-day change
0.00 pp
From 2.19% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apache1 product
- solrEOL6.2.0 | 6.2.1 | 6.3.0 | 6.4.0 | 6.4.1 | 6.4.2 | 6.5.0 | 6.5.1 | 6.6.0
Apache software foundation1 product
- apache solr6.2.0 to 6.6.0
Org.apache.solr1 product
- solr-core≥ 6.2.0, < 6.6.1
3 vendors · 3 products
