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CVE-2021-22138

Quick assessment

Affected
Elastic Elasticsearch
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.

Elasticsearch Logstash是荷兰Elasticsearch公司的一套日志分析和监控工具。 Logstash 存在安全漏洞。该漏洞源于程序监视功能中存在TLS证书验证漏洞，可能会导致一名中间人攻击Logstash监视数据。以下产品及版本受到影响：Logstash 6.4.0版本到6.8.15、Logstash 7.12.0 版本。

AI Predicted 7.4 Difficulty: Easy EPSS 0.46% · P37

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-22138

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
In Logstash versions after 6.4.0 and before 6.8.15 and 7.12.0 a TLS certificate validation flaw was found in the monitoring feature. When specifying a trusted server CA certificate Logstash would not properly verify the certificate returned by the monitoring server. This could result in a man in the middle style attack against the Logstash monitoring data.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
证书验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Elasticsearch Logstash 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elasticsearch Logstash是荷兰Elasticsearch公司的一套日志分析和监控工具。 Logstash 存在安全漏洞。该漏洞源于程序监视功能中存在TLS证书验证漏洞，可能会导致一名中间人攻击Logstash监视数据。以下产品及版本受到影响：Logstash 6.4.0版本到6.8.15、Logstash 7.12.0 版本。
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
Elastic Elasticsearch after 6.4.0 and before 6.8.15 and 7.12.0 -

II. Public POCs for CVE-2021-22138

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III. Intelligence Information for CVE-2021-22138

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Other References for CVE-2021-22138 (1)

Same Patch Batch · Elastic · 2021-05-13 · 6 CVEs total

CVE-2021-22140 Elastic App Search web crawler 代码问题漏洞
CVE-2021-22139 Elastic Stack Kibana 资源管理错误漏洞
CVE-2021-22137 Elasticsearch 信息泄露漏洞
CVE-2021-22135 Elasticsearch 信息泄露漏洞
CVE-2021-22136 Elastic Stack Kibana 代码问题漏洞

IV. Related Vulnerabilities

Same product: Elasticsearch
Same vendor: Elastic
Same weakness: CWE-295

V. Comments for CVE-2021-22138

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