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CVE-2023-22943— Modular Input REST API Requests Connect via HTTP after Certificate Validation Failure in Splunk Add-on Builder and Splunk CloudConnect SDK

Quick assessment

Affected
Splunk Splunk Add-on Builder
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.

Splunk是美国Splunk公司的一套数据收集分析软件。该软件主要用于收集、索引和分析及其所产生的数据，包括所有IT系统和基础结构（物理、虚拟机和云）生成的数据。 Splunk Add-on Builder (AoB) 4.1.2之前版本、Splunk CloudConnect SDK 3.1.3之前版本存在信任管理问题漏洞，该漏洞源于第三方API的请求在连接失败后错误地恢复为使用HTTP进行连接。

CVSS 4.8 · Medium EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2023-22943

Vulnerability Information
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Vulnerability Title
Modular Input REST API Requests Connect via HTTP after Certificate Validation Failure in Splunk Add-on Builder and Splunk CloudConnect SDK
Source: CVE Program / CVE List V5
Vulnerability Description
In Splunk Add-on Builder (AoB) versions below 4.1.2 and the Splunk CloudConnect SDK versions below 3.1.3, requests to third-party APIs through the REST API Modular Input incorrectly revert to using HTTP to connect after a failure to connect over HTTPS occurs.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未能安全地进行程序失效(Failing Open)
Source: CVE Program / CVE List V5
Vulnerability Title
Splunk 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Splunk是美国Splunk公司的一套数据收集分析软件。该软件主要用于收集、索引和分析及其所产生的数据，包括所有IT系统和基础结构（物理、虚拟机和云）生成的数据。 Splunk Add-on Builder (AoB) 4.1.2之前版本、Splunk CloudConnect SDK 3.1.3之前版本存在信任管理问题漏洞，该漏洞源于第三方API的请求在连接失败后错误地恢复为使用HTTP进行连接。
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
Splunk Splunk Add-on Builder 4.1 ~ 4.1.2 -
Splunk Splunk CloudConnect SDK 3.1 ~ 3.1.3 -

II. Public POCs for CVE-2023-22943

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III. Intelligence Information for CVE-2023-22943

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Other References for CVE-2023-22943 (1)

Same Patch Batch · Splunk · 2023-02-14 · 13 CVEs total

CVE-2023-22939 8.1 HIGH SPL Command Safeguards Bypass via the ‘map’ SPL Command in Splunk Enterprise
CVE-2023-22935 8.1 HIGH SPL Command Safeguards Bypass via the ‘display.page.search.patterns.sensitivity’ Search Pa
CVE-2023-22933 8.0 HIGH Persistent Cross-Site Scripting through the ‘module’ Tag in a View in Splunk Enterprise
CVE-2023-22932 8.0 HIGH Persistent Cross-Site Scripting through a Base64-encoded Image in a View in Splunk Enterpr
CVE-2023-22934 7.3 HIGH SPL Command Safeguards Bypass via the ‘pivot’ SPL Command in Splunk Enterprise
CVE-2023-22941 6.5 MEDIUM Improperly Formatted ‘INGEST_EVAL’ Parameter Crashes Splunk Daemon
CVE-2023-22936 6.3 MEDIUM Authenticated Blind Server Side Request Forgery via the ‘search_listener’ Search Parameter
CVE-2023-22940 6.3 MEDIUM SPL Command Safeguards Bypass via the ‘collect’ SPL Command Aliases in Splunk Enterprise
CVE-2023-22942 5.4 MEDIUM Cross-Site Request Forgery in the ‘ssg/kvstore_client’ REST Endpoint in Splunk Enterprise
CVE-2023-22938 4.3 MEDIUM Permissions Validation Failure in the ‘sendemail’ REST API Endpoint in Splunk Enterprise
CVE-2023-22937 4.3 MEDIUM Unnecessary File Extensions Allowed by Lookup Table Uploads in Splunk Enterprise
CVE-2023-22931 4.3 MEDIUM ‘createrss’ External Search Command Overwrites Existing RSS Feeds in Splunk Enterprise

IV. Related Vulnerabilities

Same product: Splunk Add-on Builder
Same vendor: Splunk
Same weakness: CWE-636

V. Comments for CVE-2023-22943

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