CVE-2023-23604

Creation of duplicate SystemPrincipal from less secure contexts

CVSS 6.5 MEDIUMEPSS 0.5%CWE-863

A duplicate `SystemPrincipal` object could be created when parsing a non-system html document via `DOMParser::ParseFromSafeString`. This could have lead to bypassing web security checks. This vulnerability affects Firefox < 109.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected products

Mozilla · Firefox

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1802346 https://www.mozilla.org/security/advisories/mfsa2023-01/