CVE-2023-4053

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.13%
Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Firefox ESR
Affected: Mozilla Thunderbird
Published at:
Updated at:

References

Link Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1839079 issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2023-29/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/
https://www.mozilla.org/security/advisories/mfsa2023-38/

Frequently Asked Questions

What is the severity of CVE-2023-4053?
CVE-2023-4053 has been scored as a medium severity vulnerability.
How to fix CVE-2023-4053?
To fix CVE-2023-4053, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-4053 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-4053 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-4053?
CVE-2023-4053 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Thunderbird.
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