When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1053-1 firefox-esr security update
Debian DLA Debian DLA DLA-1087-1 icedove/thunderbird security update
Debian DSA Debian DSA DSA-3928-1 firefox-esr security update
Debian DSA Debian DSA DSA-3928-2 firefox-esr security update
Debian DSA Debian DSA DSA-3968-1 icedove/thunderbird security update
EUVD EUVD EUVD-2017-16778 When a page's content security policy (CSP) header contains a "sandbox" directive, other directives are ignored. This results in the incorrect enforcement of CSP. This vulnerability affects Thunderbird < 52.3, Firefox ESR < 52.3, and Firefox < 55.
Ubuntu USN Ubuntu USN USN-3391-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-3416-1 Thunderbird vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T16:12:28.433Z

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

Link: CVE-2017-7803

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:09.937

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

Link: CVE-2017-7803

cve-icon Redhat

Severity : Moderate

Publid Date: 2017-08-08T00:00:00Z

Links: CVE-2017-7803 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses