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CVE-2021-29943— Apache Solr Unprivileged users may be able to perform unauthorized read/write to collections

Quick assessment

Affected
Apache Software Foundation Apache Solr
Exploitation
High exploitation probability; assess promptly
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）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。 Apache Solr versions 8.8.2之前版本存在安全漏洞，该漏洞源于使用服务器凭据而不是原始客户端凭据转发代理分布式请求，导致接收主机上的授权解析不正确。

AI Predicted 7.5 Difficulty: Moderate EPSS 4.67% · P92
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I. Basic Information for CVE-2021-29943

Vulnerability Information
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Vulnerability Title
Apache Solr Unprivileged users may be able to perform unauthorized read/write to collections
Source: CVE Program / CVE List V5
Vulnerability Description
When using ConfigurableInternodeAuthHadoopPlugin for authentication, Apache Solr versions prior to 8.8.2 would forward/proxy distributed requests using server credentials instead of original client credentials. This would result in incorrect authorization resolution on the receiving hosts.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Solr 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Solr是美国阿帕奇（Apache）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。 Apache Solr versions 8.8.2之前版本存在安全漏洞，该漏洞源于使用服务器凭据而不是原始客户端凭据转发代理分布式请求，导致接收主机上的授权解析不正确。
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 Apache Solr ~ 8.8.2 -

II. Public POCs for CVE-2021-29943

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III. Intelligence Information for CVE-2021-29943

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Vendor Advisories for CVE-2021-29943 (1)

Mailing List Discussions for CVE-2021-29943 (1)

Same Patch Batch · Apache Software Foundation · 2021-04-13 · 4 CVEs total

CVE-2021-27905 SSRF vulnerability with the Replication handler
CVE-2021-29262 Misapplied Zookeeper ACLs can result in leakage of configured authentication and authoriza
CVE-2021-29425 Possible limited path traversal vulnerabily in Apache Commons IO

IV. Related Vulnerabilities

Same product: Apache Solr
Same vendor: Apache Software Foundation
Same weakness: CWE-863

V. Comments for CVE-2021-29943

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