CVE-2021-42083
An authenticated attacker is able to create alerts that trigger a stored XSS attack.
Does this matter?
Lower severity and a low EPSS score (0.55%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.55% probability · 44th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- osnexus/quantastor
- Source
- csirt@divd.nl
References
- https://csirt.divd.nl/CVE-2021-42083Third Party Advisory
- https://csirt.divd.nl/DIVD-2021-00020/
- https://www.osnexus.com/products/software-defined-storageProduct
- https://www.wbsec.nl/osnexusThird Party Advisory
- https://csirt.divd.nl/CVE-2021-42083Third Party Advisory
- https://www.divd.nl/DIVD-2021-00020
- https://www.osnexus.com/products/software-defined-storageProduct
- https://www.wbsec.nl/osnexusThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.