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CVE-2021-42856— Reflected Cross-site Scripting at DsaDataTest

Quick assessment

Affected
Aternity SteelCentral AppInternals Dynamic Sampling Agent
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.

Aternity SteelCentral AppInternals是美国Aternity公司的一个监控现代自动化解决方案。提供应用程序性能监控 (APM) 和诊断。 Aternity SteelCentral AppInternals 存在安全漏洞，该漏洞允许攻击者制作自己的恶意负载来触发 XSS 漏洞。

CVSS 4.7 · Medium EPSS 0.60% · P47

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-42856

Vulnerability Information
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Vulnerability Title
Reflected Cross-site Scripting at DsaDataTest
Source: CVE Program / CVE List V5
Vulnerability Description
It was discovered that the /DsaDataTest endpoint is susceptible to Cross-site scripting (XSS) attack. It was noted that the Metric parameter does not have any input checks on the user input that allows an attacker to craft its own malicious payload to trigger a XSS vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Aternity SteelCentral AppInternals 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Aternity SteelCentral AppInternals是美国Aternity公司的一个监控现代自动化解决方案。提供应用程序性能监控 (APM) 和诊断。 Aternity SteelCentral AppInternals 存在安全漏洞，该漏洞允许攻击者制作自己的恶意负载来触发 XSS 漏洞。
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
Aternity SteelCentral AppInternals Dynamic Sampling Agent 10.x -

II. Public POCs for CVE-2021-42856

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III. Intelligence Information for CVE-2021-42856

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Other References for CVE-2021-42856 (1)

Same Patch Batch · Aternity · 2022-03-09 · 7 CVEs total

CVE-2021-42786 9.8 CRITICAL Remote Code Execution at AgentControllerServlet
CVE-2021-42854 9.8 CRITICAL Directory Traversal Read/Write/Delete at PluginServlet
CVE-2021-42787 9.4 CRITICAL Directory Traversal Write/Delete/Partial Read at AgentConfigurationServlet
CVE-2021-42853 9.1 CRITICAL Directory Traversal Delete/Read at AgentDiagnosticServlet
CVE-2021-42855 7.8 HIGH Local privilege escalation due to misconfigured write permission on .debug_command.config
CVE-2021-42857 5.3 MEDIUM Directory Traversal Partial Write at AgentDaServlet

IV. Related Vulnerabilities

Same product: SteelCentral AppInternals Dynamic Sampling Agent
Same vendor: Aternity
Same weakness: CWE-20

V. Comments for CVE-2021-42856

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