CVE-2021-42854 - CVE House
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Status published Critical CVE-2021-42854

Directory Traversal Read/Write/Delete at PluginServlet

Vulnerability Description

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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Darrel Huang, Bjorn Lim, Leng Kang Hao from Government Technology Agency of Singapore

References

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CVE-2021-42853
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CVE-2021-42787
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Critical 9.4

Affected Vendor

Affected Software

SteelCentral AppInternals Dynamic Sampling Agent
Vulnerable Versions:
10.x, 12.13.0, 11.8.8

Timeline

Official Publish: March 9th, 2022
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-20

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1213 Data from Information Repositories
Collection
T1565.002 Stored Data Manipulation
Impact