Vulnerability in Mozilla Firefox
CVE-2019-11762
If two same-origin documents set document.domain differently to become cross-origin, it was possible for them to call arbitrary DOM methods/getters/setters on the now-cross-origin window. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.1% 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 before 70
- Mozilla Firefox Esr — versions before 68.2
- Mozilla Firefox Esr
- Mozilla Thunderbird — versions before 68.2
- Canonical Ubuntu Linux — versions 16.04
Weakness classification (CWE)
References
- www.mozilla.org/security/advisories/mfsa2019-35/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-33/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-34/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking)
- security.gentoo.org/glsa/202003-10 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4335-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11762?
- CVE-2019-11762 is a medium-severity vulnerability in Mozilla Firefox, classified under Origin Validation Error. CVSS score: 6.1/10. Published 2020-01-08.
- How severe is CVE-2019-11762?
- Medium severity. CVSS v3 base score is 6.1 out of 10.