Vulnerability in Mozilla Firefox
CVE-2019-11711
When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even those that did not use document.domain to relax their origin security. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.016 (76.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Mozilla Thunderbird — versions unspecified
- Debian Linux — versions 8.0
References
- www.mozilla.org/security/advisories/mfsa2019-21/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-22/ (Vendor Advisory)
- www.mozilla.org/security/advisories/mfsa2019-23/ (Vendor Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Permissions Required, Issue Tracking, Vendor Advisory)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00055.html (vendor-advisory, Broken Link)
- lists.opensuse.org/opensuse-security-announce/2019-07/msg00058.html (vendor-advisory, Broken Link)
- lists.debian.org/debian-lts-announce/2019/08/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/08/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201908-12 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/201908-20 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11711?
- CVE-2019-11711 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 8.8/10. Published 2019-07-23.
- How severe is CVE-2019-11711?
- High severity. CVSS v3 base score is 8.8 out of 10.