CVE-2019-11738

Mozilla: Content security policy bypass through hash-based sources in directives

Published Sep 27, 2019 CVSS 3.1 · 6.3 Medium EPSS 1.4% KEV · Not listed
Description
If a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2019-3408 If a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.
Ubuntu USN Ubuntu USN USN-4122-1 Firefox vulnerabilities
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Aug 4, 2024, 11:03 PM
Reserved
May 3, 2019, 12:00 AM
Status
Modified
Published
Sep 27, 2019, 6:15 PM
Modified
Jun 17, 2026, 2:13 AM
Severity
Low
Public date
Sep 3, 2019, 12:00 AM