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CVE-2017-9803

UnknownEPSS 2.20%

Last modified

CVE-2017-9803 is a vulnerability of currently unknown severity. 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. EPSS estimates a 2.20% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
2.20%

80.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheSolr6.2.0
ApacheSolr6.2.1
ApacheSolr6.3.0
ApacheSolr6.4.0
ApacheSolr6.4.1
ApacheSolr6.4.2
ApacheSolr6.5.0
ApacheSolr6.5.1
ApacheSolr6.6.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-9803?
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.
How severe is CVE-2017-9803?
Severity scoring for CVE-2017-9803 is pending analysis. The EPSS model estimates a 2.20% probability of exploitation in the next 30 days.
How do I fix CVE-2017-9803?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-9803?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST