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Bug 1493507 - (CVE-2017-9803) CVE-2017-9803 solr: Kerberos delegation token functionality allows to re-use authentication
CVE-2017-9803 solr: Kerberos delegation token functionality allows to re-use ...
Status: CLOSED NOTABUG
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
impact=important,public=20170918,repo...
: Security
Depends On:
Blocks:
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Reported: 2017-09-20 07:33 EDT by Andrej Nemec
Modified: 2017-09-20 07:35 EDT (History)
42 users (show)

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Fixed In Version: solr 6.6.1
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Last Closed: 2017-09-20 07:34:44 EDT
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Description Andrej Nemec 2017-09-20 07:33:18 EDT
 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 07:35:04 EDT
Statement:

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

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