What’s Vulnerable › Vulnerabilities

CVE-2021-42857: Directory Traversal Partial Write at AgentDaServlet

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-10 · updated 2026-06-17
• Weakness: CWE-20

Description

It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent's (DSA) AgentDaServlet has directory traversal vulnerabilities at the "/api/appInternals/1.0/agent/da/pcf" API. The affected endpoint does not have any validation of the user's input that allows a malicious payload to be injected.

Affected products

• Aternity SteelCentral AppInternals Dynamic Sampling Agent: from 11.0.0 before 11.8.8; from 12.0.0 before 12.13.0; 10.0.0 — fixed in 11.8.8, 12.13.0

How to fix

Upgrade to a fixed version: Aternity SteelCentral AppInternals Dynamic Sampling Agent 11.8.8, 12.13.0. Check the vendor advisory for mitigations.

References

• https://aternity.force.com/customersuccess/s/article/Directory-Traversal-Partial-Write-at-AgentDaServlet-CVE-2021-42857
• https://aternity.force.com/customersuccess/s/article/Directory-Traversal-Partial-Write-at-AgentDaServlet-CVE-2021-42857

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