Auth bypass in Mozilla Firefox
CVE-2023-3482
When Firefox is configured to block storage of all cookies, it was still possible to store data in localstorage by using an iframe with a source of 'about:blank'. This could have led to malicious websites storing tracking data without permission. This vulnerability affects Firefox < 115.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (45.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2023-22/ (Vendor Advisory)
- security.gentoo.org/glsa/202401-10
Frequently asked questions
- What is CVE-2023-3482?
- CVE-2023-3482 is a medium-severity vulnerability in Mozilla Firefox, classified under Missing Authorization. CVSS score: 6.5/10. Published 2023-07-05.
- How severe is CVE-2023-3482?
- Medium severity. CVSS v3 base score is 6.5 out of 10.