CVE-2019-9809: mozilla firefox Resource Management Errors
Vulnerability summary
CVE-2019-9809 is a high (CVSS 7.5) Resource Management Errors vulnerability in mozilla firefox. EPSS estimates a 1.64% chance of exploitation in the next 30 days, higher than 76% of scored vulnerabilities. 1 public exploit is recorded.
Advisory lineage
Upstream 0 · Downstream 4 · Related 4Timeline
- 26-04-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
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.
CVSS metrics
3 scores · 2 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
1.64%
Chance of exploitation in the next 30 days
Percentile
76%
Versus all other CVEs
30-day change
0.00 pp
From 1.64% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundExploit Reference (bugzilla.mozilla.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Ubuntu3 products
- firefox< 66.0.1+build1-0ubuntu0.14.04.1 | < 66.0+build3-0ubuntu0.16.04.2 | < 66.0+build3-0ubuntu0.18.04.1
- mozjs38All versions (No fix recorded)
- mozjs52All versions (No fix recorded)
Mozilla1 product
- firefox≥ unspecified, < 66 | < 66.0
2 vendors · 4 products
References
8 links- bugzilla.mozilla.org/show_bug.cgi?id=1282430X Refsource MISCExploitIssue TrackingPatchVendor Advisory
- bugzilla.mozilla.org/show_bug.cgi?id=1523249X Refsource MISCIssue TrackingPermissions RequiredVendor Advisory