CVE-2021-42855: Local privilege escalation due to misconfigured write permission on .debug_command.config file
First published: Wed Feb 23 2022(Updated: )
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.
Credit: cve_disclosure@tech.gov.sg
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Riverbed Steelcentral Appinternals Dynamic Sampling Agent | >=11.0.0<11.8.8 | |
| Riverbed Steelcentral Appinternals Dynamic Sampling Agent | >=12.0.0<12.13.0 | |
| Riverbed Steelcentral Appinternals Dynamic Sampling Agent | =10.0.0 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Frequently Asked Questions
What is CVE-2021-42855?
CVE-2021-42855 is a vulnerability in the SteelCentral AppInternals Dynamic Sampling Agent (DSA) that allows local privilege escalation due to misconfigured write permission on the ".debug_command.config" file.
How does CVE-2021-42855 affect Riverbed Steelcentral Appinternals Dynamic Sampling Agent?
CVE-2021-42855 affects Riverbed Steelcentral Appinternals Dynamic Sampling Agent versions 10.0.0, 11.0.0 to 11.8.8, and 12.0.0 to 12.13.0.
What is the severity of CVE-2021-42855?
CVE-2021-42855 has a severity score of 7.8 (high).
How can I fix CVE-2021-42855?
To fix CVE-2021-42855, ensure that the ".debug_command.config" file has the correct write permissions and is properly configured.
Where can I find more information about CVE-2021-42855?
You can find more information about CVE-2021-42855 at the following link: [https://aternity.force.com/customersuccess/s/article/Local-privilege-escalation-due-to-misconfigured-write-permission-on-debug-command-config-file-CVE-2021-42855](https://aternity.force.com/customersuccess/s/article/Local-privilege-escalation-due-to-misconfigured-write-permission-on-debug-command-config-file-CVE-2021-42855)
- collector/nvd-index
- agent/weakness
- agent/type
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/title
- agent/author
- agent/references
- agent/last-modified-date
- agent/description
- agent/first-publish-date
- agent/event
- agent/tags
- agent/source
- vendor/riverbed
- canonical/riverbed steelcentral appinternals dynamic sampling agent
- version/riverbed steelcentral appinternals dynamic sampling agent/11.0.0
- version/riverbed steelcentral appinternals dynamic sampling agent/12.0.0
- version/riverbed steelcentral appinternals dynamic sampling agent/10.0.0