CVE-2021-23982

Medium

Description

Using techniques that built on the slipstream research, a malicious webpage could have scanned both an internal network's hosts as well as services running on the user's local machine utilizing WebRTC connections. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.

SeverityMedium
CVSS6.5
Exploit probability—
ProductMozilla Firefox
PublishedMar 31, 2021
First seenMar 31, 2021

How to fix

Update
  • mozilla firefox87.0 or later
  • mozilla firefox_esr78.9 or later
  • mozilla thunderbird78.9 or later

Affected products

ProductAffected versionsFixed in
mozilla firefoxv < 87.087.0
mozilla firefox_esrv < 78.978.9
mozilla thunderbirdv < 78.978.9

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