Hacks – May 2022 – Follina Zero Day Vulnerability

Tips and Tricks to mitigate and prevent “Follina”:

• Turn off the preview pane in file explorer and Microsoft Outlook.
  • File explorer – go to the View menu tab, if preview pane is highlighted, click it to disable
  • Microsoft Outlook –
    • File > Options > Trust Center > Trust Center Settings,and then select Attachment Handling.
    • Click Turn off Attachment Preview
  • Always verify the sender of an email.
  • Hover over hyperlinks before clicking them to reveal their true location.
  • Never open an attachment you are unsure of.

References:

https://www.huntress.com/blog/microsoft-office-remote-code-execution-follina-msdt-bug?hstc=1139630.416896d61b0745d0044e9a03af7f82ad.1653955273132.1653955273132.1653955273132.1&_

hssc=1139630.1.1653955273132&__hsfp=3244405923&hsutk=416896d61b0745d0044e9a03af7f82ad&contentType=listing-page

https://doublepulsar.com/follina-a-microsoft-office-code-execution-vulnerability-1a47fce5629e

https://support.microsoft.com/en-us/office/preview-attachments-in-outlook-6f61e4ad-a93d-408c-bb3a-bc95107f66be

https://threatpost.com/zero-day-follina-bug-lays-older-microsoft-office-versions-open-to-attack/179756/

https://www.reddit.com/r/msp/comments/v0tuvs/ms_office_vuln_polite_warning_about_nearterm/