CVE-2019-9809

Published: Apr 26, 2019Modified: Jun 17, 2026

7.5

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

If the source for resources on a page is through an FTP connection, it is possible to trigger a series of modal alert messages for these resources through invalid credentials or locations. These messages cannot be immediately dismissed, allowing for a denial of service (DOS) attack. This vulnerability affects Firefox < 66.

Affected (1)

Products: Mozilla: Firefox

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 66.0

Related CWEs

References (6)

https://bugzilla.mozilla.org/show_bug.cgi?id=1282430

Source: security@mozilla.org

ExploitIssue TrackingPatchVendor Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1523249

Source: security@mozilla.org

Issue TrackingPermissions RequiredVendor Advisory

https://www.mozilla.org/security/advisories/mfsa2019-07/

Source: security@mozilla.org

Vendor Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1282430

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitIssue TrackingPatchVendor Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1523249

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPermissions RequiredVendor Advisory

https://www.mozilla.org/security/advisories/mfsa2019-07/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.