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CVE-2021-36305

MEDIUMCVSS 6.5/10EPSS 0.80%

Last modified

CVE-2021-36305 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Dell PowerScale OneFS contains an Unsynchronized Access to Shared Data in a Multithreaded Context in SMB CA handling. An authenticated user of SMB on a cluster with CA could potentially exploit this vulnerability, leading to a denial of service over SMB.. EPSS estimates a 0.80% chance of exploitation in the next 30 days.

Description

Dell PowerScale OneFS contains an Unsynchronized Access to Shared Data in a Multithreaded Context in SMB CA handling. An authenticated user of SMB on a cluster with CA could potentially exploit this vulnerability, leading to a denial of service over SMB.

Metrics

CVSS 3.1
6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
0.80%

52.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
DellEmc Powerscale Onefs8.2.0
DellEmc Powerscale Onefs8.2.1
DellEmc Powerscale Onefs8.2.2
DellEmc Powerscale Onefs9.0.0.0
DellEmc Powerscale Onefs9.1.0.0
DellEmc Powerscale Onefs9.1.1.0
DellEmc Powerscale Onefs9.2.0.0
DellEmc Powerscale Onefs9.2.1.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-36305?
Dell PowerScale OneFS contains an Unsynchronized Access to Shared Data in a Multithreaded Context in SMB CA handling. An authenticated user of SMB on a cluster with CA could potentially exploit this vulnerability, leading to a denial of service over SMB.
How severe is CVE-2021-36305?
CVE-2021-36305 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.80% probability of exploitation in the next 30 days.
How do I fix CVE-2021-36305?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-36305?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST