Bug 1493507 (CVE-2017-9803) - CVE-2017-9803 solr: Kerberos delegation token functionality allows to re-use authentication
Summary: CVE-2017-9803 solr: Kerberos delegation token functionality allows to re-use ...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2017-9803
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-09-20 11:33 UTC by Andrej Nemec
Modified: 2021-02-17 01:28 UTC (History)
42 users (show)

Fixed In Version: solr 6.6.1
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Last Closed: 2017-09-20 11:34:44 UTC
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Description Andrej Nemec 2017-09-20 11:33:18 UTC
 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.

References:

https://wiki.apache.org/solr/SolrSecurity
http://mail-archives.us.apache.org/mod_mbox/www-announce/201709.mbox/%3CCAOOKt53AOScg04zUh0%2BR_fcXD0C9s5mQ-OzdgYdnHz49u1KmXw@mail.gmail.com%3E

Comment 1 Andrej Nemec 2017-09-20 11:35:04 UTC
Statement:

This issue did not affect the versions of Apache Solr as shipped with in Red Hat products.


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