Vulnerability in Mozilla Firefox
CVE-2023-4045
Offscreen Canvas did not properly track cross-origin tainting, which could have been used to access image data from another site in violation of same-origin policy. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.4% 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
- Mozilla Firefox Esr — versions unspecified
- Debian Linux — versions 11.0, 12.0
Weakness classification (CWE)
References
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- www.mozilla.org/security/advisories/mfsa2023-29/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2023-30/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2023-31/ (Vendor Advisory)
- www.debian.org/security/2023/dsa-5464 (Third Party Advisory)
- www.debian.org/security/2023/dsa-5469 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2023/08/msg00008.html
- lists.debian.org/debian-lts-announce/2023/08/msg00010.html
Frequently asked questions
- What is CVE-2023-4045?
- CVE-2023-4045 is a medium-severity vulnerability in Mozilla Firefox, classified under Origin Validation Error. CVSS score: 5.3/10. Published 2023-08-01.
- How severe is CVE-2023-4045?
- Medium severity. CVSS v3 base score is 5.3 out of 10.