CVE-2021-42855 - CVE House
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Status published High CVE-2021-42855

Local privilege escalation due to misconfigured write permission on .debug_command.config file

Vulnerability Description

It was discovered that the SteelCentral AppInternals Dynamic Sampling Agent (DSA) uses the ".debug_command.config" file to store a json string that contains a list of IDs and pre-configured commands. The config file is subsequently used by the "/api/appInternals/1.0/agent/configuration" API to map the corresponding ID to a command to be executed.

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-2021-42787
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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 17th, 2024
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

CWE-284

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1068 Exploitation for Privilege Escalation
Privilege Escalation
T1078 Valid Accounts
Persistence
T1213 Data from Information Repositories
Collection
T1565.002 Stored Data Manipulation
Impact