CVE-2023-5721 Security feature bypass in Firefox

Medium 4.3 Published Updated

Insufficient activation delay allows users to unintentionally activate or dismiss browser prompts, bypassing intended security confirmations.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
Available

What is CVE-2023-5721?

CVE-2023-5721 is a medium-severity vulnerability in Debian Debian Linux, published on 24 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

It was possible for certain browser prompts and dialogs to be activated or dismissed unintentionally by the user due to an insufficient activation-delay. This vulnerability affects Firefox < 119, Firefox ESR < 115.4, and Thunderbird < 115.4.1.

Weakness: CWE-1021

Which versions are affected by CVE-2023-5721?

It affects 4 products.

Products include Debian Debian Linux, Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.

How do I fix CVE-2023-5721?

Upgrade to a fixed version.

Is CVE-2023-5721 being exploited?

There is no known exploitation of CVE-2023-5721 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2023-5721, GHSA-cw53-7m4g-22j6, UBUNTU-CVE-2023-5721.

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