1-800-691-1991 | 9am - 8pm ET
EN

Veeam Best Practices regarding CVE-2021-36934

KB ID: 4231
Product: Veeam Agent for Microsoft Windows, Veeam Backup & Replication
Published: 2021-11-01
Last Modified: 2021-11-01

Challenge

This article documents Veeam's position on Windows Elevation of Privilege Vulnerability CVE-2021-36934. Specifically regarding the listed mitigation steps involving removal of all shadow copies, and the "Impact of workaround" mentioned in the Workarounds section of CVE-2021-36934.

 

Solution

While VSS and shadow copies are mentioned in CVE-2021-36934, shadow copy mechanisms are not part of the vulnerability. The advice to remove all shadow copies is because shadow copies created before the update may contain exploitable data.

The Workarounds section of CVE-2021-36934 states, "Deleting shadow copies could impact restore operations, including the ability to restore data with third-party backup applications." This statement does not apply to Veeam products (such as Backup & Replication or Agent for Windows). Veeam uses volatile shadow copies, which are deleted automatically when the backup job completes. 

Deletion of VSS shadow copies, as advised in CVE-2021-36934, will not affect Veeam backups.

KB ID: 4231
Product: Veeam Agent for Microsoft Windows, Veeam Backup & Replication
Published: 2021-11-01
Last Modified: 2021-11-01

Couldn't find what you were looking for?

Below you can submit an idea for a new knowledge base article.
Report a typo on this page:

Please select a spelling error or a typo on this page with your mouse and press CTRL + Enter to report this mistake to us. Thank you!

Spelling error in text

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

Oops! Something went wrong.

Please try again later.

KB Feedback/Suggestion

This form is only for KB Feedback/Suggestions, if you need help with the software open a support case

By submitting, you are agreeing to have your personal information managed in accordance with the terms of Veeam's Privacy Policy.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Thank you for your interest in Veeam products!
We've sent a verification code to:
  • Incorrect verification code. Please try again.
An email with a verification code was just sent to
Didn't receive the code? Click to resend in sec
Didn't receive the code? Click to resend
Thank you!

Thank you!

Your feedback has been received and will be reviewed.

error icon

Oops! Something went wrong.

Please try again later.