Description
File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Published: 2018-06-11
Score: 7.8 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1118-1 firefox-esr security update
Debian DLA Debian DLA DLA-1153-1 icedove/thunderbird security update
Debian DSA Debian DSA DSA-3987-1 firefox-esr security update
Debian DSA Debian DSA DSA-4014-1 thunderbird security update
EUVD EUVD EUVD-2017-16789 File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Ubuntu USN Ubuntu USN USN-3435-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-3436-1 Thunderbird vulnerabilities
History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

Subscriptions

Debian Debian Linux
Mozilla Firefox Thunderbird
Redhat Enterprise Linux Enterprise Linux Desktop Enterprise Linux Server Enterprise Linux Server Aus Enterprise Linux Server Eus Enterprise Linux Workstation
cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T16:12:28.371Z

Reserved: 2017-04-12T00:00:00.000Z

Link: CVE-2017-7814

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:10.547

Modified: 2025-11-25T17:50:16.803

Link: CVE-2017-7814

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-09-28T00:00:00Z

Links: CVE-2017-7814 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses