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CVE-2017-9803

Quick assessment

Affected
Apache Software Foundation Apache Solr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Solr是美国阿帕奇（Apache）软件基金会的一款基于Lucene（一款全文搜索引擎）的搜索服务器。该产品支持层面搜索、垂直搜索、高亮显示搜索结果等。Kerberos plugin是其中的一个网络认证协议插件。 Apache Solr 6.2.0版本至6.6.0版本中的Kerberos插件的delegation token功能存在安全漏洞。攻击者可利用该漏洞获取安全配置信息，提升权限，公开/更改个人数据或造成拒绝服务。

AI Predicted 8.6 Difficulty: Easy EPSS 2.19% · P82

Possible ATT&CK Techniques 1 AI

T1098 · Account Manipulation
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I. Basic Information for CVE-2017-9803

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Solr 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Solr是美国阿帕奇（Apache）软件基金会的一款基于Lucene（一款全文搜索引擎）的搜索服务器。该产品支持层面搜索、垂直搜索、高亮显示搜索结果等。Kerberos plugin是其中的一个网络认证协议插件。 Apache Solr 6.2.0版本至6.6.0版本中的Kerberos插件的delegation token功能存在安全漏洞。攻击者可利用该漏洞获取安全配置信息，提升权限，公开/更改个人数据或造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Solr 6.2.0 to 6.6.0 -

II. Public POCs for CVE-2017-9803

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III. Intelligence Information for CVE-2017-9803

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Vendor Advisories for CVE-2017-9803 (1)

Mailing List Discussions for CVE-2017-9803 (1)

IV. Related Vulnerabilities

Same product: Apache Solr
Same vendor: Apache Software Foundation

V. Comments for CVE-2017-9803

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