CVE-2021-42083
Authenticated Stored XSS in OSNEXUS QuantaStor 6.0.0.335
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 10, 2023
- Updated
- Sep 22, 2025
- Reserved
- Oct 7, 2021
Description
An authenticated attacker is able to create alerts that trigger a stored XSS attack.
POC
* go to the alert manager
* open the ITSM tab * add a webhook with the URL/service token value
' -h && id | tee /tmp/ttttttddddssss #' (whitespaces are tab characters)
* click add
* click apply
* create a test alert
* The test alert will run the command
“id | tee /tmp/ttttttddddssss” as root.
* after the test alert inspect
/tmp/ttttttddddssss it'll contain the ids of the root user.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.7 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N | DIVD |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
QuantaStorOSNEXUS |
|
References
- https://www.wbsec.nl/osnexusthird-party-advisorytechnical-descriptionexploit
- https://csirt.divd.nl/DIVD-2021-00020/third-party-advisory
- https://www.osnexus.com/products/software-defined-storageproduct
- https://csirt.divd.nl/CVE-2021-42083third-party-advisoryexploittechnical-description
- https://www.divd.nl/DIVD-2021-00020third-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.