CVE-2017-9803 Information

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 Vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

http://mail-archives.us.apache.org/mod_mbox/www-announce/201709.mbox/3CCAOOKt53AOScg04zUh02BR_fcXD0C9s5mQ-OzdgYdnHz49u1KmXw@mail.gmail.com3E http://www.securityfocus.com/bid/100870

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.5