CVE-2017-5386 in Firefox

Summary

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.

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• Reservation: 01/13/2017
• Disclosure: 06/11/2018
• Moderation: VulDB entry created
• Entries: VDB-96019 (1)
• CPE: ready
• CWE: CWE-264 (Confirmed)
• CVSS: 6.8
• EPSS: 0.01186
• Activities: Very Low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2017-5386
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-5386
• CVE Details: https://www.cvedetails.com/cve/CVE-2017-5386/