Vulnerability in Mozilla Firefox
CVE-2019-9809
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.
EPSS: 0.016 (74.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Mozilla Firefox — versions unspecified
Weakness classification (CWE)
References
- security@mozilla.org (x_refsource_MISC, Vendor Advisory)
- security@mozilla.org (Exploit, Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2019-9809?
- CVE-2019-9809 is a high-severity vulnerability in Mozilla Firefox, classified under CWE-399. CVSS score: 7.5/10. Published 2019-04-26.
- How severe is CVE-2019-9809?
- High severity. CVSS v3 base score is 7.5 out of 10.