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CVE-2021-44548— Apache Solr information disclosure vulnerability through DataImportHandler

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存在安全漏洞，攻击者可利用该漏洞更广泛地访问网络，可能导致SMB攻击。

AI Predicted 6.5 Difficulty: Easy EPSS 5.07% · P92
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I. Basic Information for CVE-2021-44548

Vulnerability Information
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Vulnerability Title
Apache Solr information disclosure vulnerability through DataImportHandler
Source: CVE Program / CVE List V5
Vulnerability Description
An Improper Input Validation vulnerability in DataImportHandler of Apache Solr allows an attacker to provide a Windows UNC path resulting in an SMB network call being made from the Solr host to another host on the network. If the attacker has wider access to the network, this may lead to SMB attacks, which may result in: * The exfiltration of sensitive data such as OS user hashes (NTLM/LM hashes), * In case of misconfigured systems, SMB Relay Attacks which can lead to user impersonation on SMB Shares or, in a worse-case scenario, Remote Code Execution This issue affects all Apache Solr versions prior to 8.11.1. This issue only affects Windows.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
路径遍历：’\UNCsharename'(WindowsUNC共享)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Solr 路径遍历漏洞
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存在安全漏洞，攻击者可利用该漏洞更广泛地访问网络，可能导致SMB攻击。
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 unspecified ~ 8.11.1 -

II. Public POCs for CVE-2021-44548

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III. Intelligence Information for CVE-2021-44548

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Vendor Advisories for CVE-2021-44548 (1)

Other References for CVE-2021-44548 (1)

IV. Related Vulnerabilities

Same product: Apache Solr
Same vendor: Apache Software Foundation
Same weakness: CWE-40

V. Comments for CVE-2021-44548

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