CVE-2023-4581

Description

Excel `.xll` add-in files did not have a blocklist entry in Firefox's executable blocklist which allowed them to be downloaded without any warning of their potential harm. This vulnerability affects Firefox < 117, Firefox ESR < 102.15, Firefox ESR < 115.2, Thunderbird < 102.15, and Thunderbird < 115.2.

4.3

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.17%

Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org

Affected: Mozilla Firefox

Affected: Mozilla Firefox ESR

Affected: Mozilla Thunderbird

References

Link	Tags
https://bugzilla.mozilla.org/show_bug.cgi?id=1843758	issue tracking permissions required
https://www.mozilla.org/security/advisories/mfsa2023-34/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-35/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-36/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-37/	vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-38/	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2023-4581?: CVE-2023-4581 has been scored as a medium severity vulnerability.
How to fix CVE-2023-4581?: To fix CVE-2023-4581, 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-2023-4581 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2023-4581 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-2023-4581?: CVE-2023-4581 affects Mozilla Firefox, Mozilla Firefox ESR, Mozilla Firefox ESR, Mozilla Thunderbird, Mozilla Thunderbird.

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