Solr Kerberos Plugin 6.6.1 improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Solr Kerberos Plugin 6.6.1 and classified as critical. This vulnerability affects unknown code. The manipulation results in improper authentication. This vulnerability is cataloged as CVE-2017-9803. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Solr Kerberos Plugin 6.6.1. Affected is an unknown code. The manipulation with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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 Solr 6.6.1 onwards.

The bug was discovered 09/18/2017. The weakness was shared 09/18/2017 (Website). The advisory is shared for download at mail-archives.us.apache.org. This vulnerability is traded as CVE-2017-9803 since 06/21/2017. It is possible to launch the attack remotely. A authentication is needed for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 103504 (Apache Solr < 6.6.1 Kerberos Plugin Delegation Token Handling Remote Information Disclosure), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 11866 (Apache Solr Kerberos Plugin Delegation Token Handling Information Disclosure Vulnerability).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103504) and SecurityFocus (BID 100870†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103504
Nessus Name: Apache Solr < 6.6.1 Kerberos Plugin Delegation Token Handling Remote Information Disclosure
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/21/2017 🔍
08/30/2017 +70 days 🔍
09/18/2017 +18 days 🔍
09/18/2017 +0 days 🔍
09/18/2017 +0 days 🔍
09/18/2017 +0 days 🔍
09/19/2017 +1 days 🔍
09/27/2017 +8 days 🔍
01/13/2021 +1204 days 🔍

Sourcesinfo

Advisory: mail-archives.us.apache.org
Researcher: Hrishikesh Gadre
Status: Not defined

CVE: CVE-2017-9803 (🔍)
GCVE (CVE): GCVE-0-2017-9803
GCVE (VulDB): GCVE-100-106824
SecurityFocus: 100870

Entryinfo

Created: 09/19/2017 09:08
Updated: 01/13/2021 12:28
Changes: 09/19/2017 09:08 (64), 11/17/2019 16:01 (3), 01/13/2021 12:28 (5)
Complete: 🔍
Cache ID: 216:AB8:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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