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MFSA2021-10 Firefox: Security Vulnerabilities fixed in Firefox 87 (CVE-2021-23985)

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MFSA2021-10 Firefox: Security Vulnerabilities fixed in Firefox 87 (CVE-2021-23985)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
03/23/2021
Created
03/24/2021
Added
03/24/2021
Modified
04/07/2021

Description

If an attacker is able to alter specific about:config values (for example malware running on the user's computer), the Devtools remote debugging feature could have been enabled in a way that was unnoticable to the user. This would have allowed a remote attacker (able to make a direct network connection to the victim) to monitor the user's browsing activity and (plaintext) network traffic. This was addressed by providing a visual cue when Devtools has an open network socket. This vulnerability affects Firefox < 87.

Solution(s)

  • mozilla-firefox-upgrade-87_0

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