Vulnerability in Mozilla Firefox
CVE-2017-5386
WebExtension scripts can use the "data:" protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions. This vulnerability affects Firefox ESR < 45.7 and Firefox < 51.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.3 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.023 (82.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 82.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Mozilla Firefox — versions unspecified
- Mozilla Firefox Esr — versions unspecified
- Debian Linux — versions 8.0
- Red Hat Enterprise Linux — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Desktop — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux Server Aus — versions 7.3, 7.4
- Red Hat Enterprise Linux Server Eus — versions 7.3, 7.4, 7.5
- Red Hat Enterprise Linux Workstation — versions 5.0, 6.0, 7.0
References
- www.mozilla.org/security/advisories/mfsa2017-02/ (Vendor Advisory)
- security.gentoo.org/glsa/201702-22 (vendor-advisory, Third Party Advisory)
- bugzilla.mozilla.org/show_bug.cgi (Exploit, Patch, Issue Tracking, Vendor Advisory)
- www.debian.org/security/2017/dsa-3771 (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1037693 (VDB Entry, Third Party Advisory, vdb-entry)
- www.mozilla.org/security/advisories/mfsa2017-01/ (Vendor Advisory)
- rhn.redhat.com/errata/RHSA-2017-0190.html (vendor-advisory, Third Party Advisory)
- www.securityfocus.com/bid/95769 (VDB Entry, Third Party Advisory, vdb-entry)
Frequently asked questions
- What is CVE-2017-5386?
- CVE-2017-5386 is a high-severity vulnerability in Mozilla Firefox. CVSS score: 7.3/10. Published 2018-06-11.
- How severe is CVE-2017-5386?
- High severity. CVSS v3 base score is 7.3 out of 10.