CVE-2023-23602

Description

A mishandled security check when creating a WebSocket in a WebWorker caused the Content Security Policy connect-src header to be ignored. This could lead to connections to restricted origins from inside WebWorkers. This vulnerability affects Firefox < 109, Thunderbird < 102.7, and Firefox ESR < 102.7.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org Vendor Advisory mozilla.org
Affected: Mozilla Firefox
Affected: Mozilla Thunderbird
Affected: Mozilla Firefox ESR
Published at:
Updated at:

References

Link Tags
https://www.mozilla.org/security/advisories/mfsa2023-02/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-01/ vendor advisory
https://www.mozilla.org/security/advisories/mfsa2023-03/ vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1800890 vendor advisory issue tracking permissions required

Frequently Asked Questions

What is the severity of CVE-2023-23602?
CVE-2023-23602 has been scored as a medium severity vulnerability.
How to fix CVE-2023-23602?
To fix CVE-2023-23602, 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-2023-23602 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-23602 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-2023-23602?
CVE-2023-23602 affects Mozilla Firefox, Mozilla Thunderbird, Mozilla Firefox ESR.
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