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

published 2022-03-09 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-29810

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 13%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

riverbed steelcentral_appinternals_dynamic_sampling_agent 11.8.8, 12.13.0

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Aternity SteelCentral AppInternals Dynamic Sampling Agent

Classification

Weakness

CWE-284 Improper Access Control
CWE-732 Incorrect Permission Assignment for Critical Resource

References

aternity.force.com /customersuccess/s/article/Local-privilege-escalation-due-to-misconfigured-write-permission-on-debug-command-c
third-party-advisory

Sources

CVE List CVE-2021-42855
NVD CVE-2021-42855

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary