CVE-2023-4053 Full screen notification obscured by external program
Attackers can obscure full-screen notifications using external program URLs, enabling user confusion and spoofing attacks in Firefox and Thunderbird.
- 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-2023-4053?
CVE-2023-4053 is a medium-severity vulnerability in Mozilla Firefox, published on 1 Aug 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
A website could have obscured the full screen notification by using a URL with a scheme handled by an external program, such as a mailto URL. This could have led to user confusion and possible spoofing attacks. This vulnerability affects Firefox < 116, Firefox ESR < 115.2, and Thunderbird < 115.2.
Weakness: CWE-59
Which versions are affected by CVE-2023-4053?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2023-4053?
Upgrade to a fixed version.
Is CVE-2023-4053 being exploited?
There is no known exploitation of CVE-2023-4053 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as DEBIAN-CVE-2023-4053, GHSA-8mxh-558j-w4gm, UBUNTU-CVE-2023-4053.