Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2017-9803

Severity CVSS v4.0:
Pending analysis
Type:
CWE-287 Authentication Issues
Publication date:
18/09/2017
Last modified:
20/04/2025

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.

Impact

Vector 3.x
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:M/Au:S/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 6.00 MEDIUM
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
6.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:apache:solr:6.2.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.2.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.3.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.4.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.4.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.4.2:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:apache:solr:6.6.0:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools