Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 69.0 |
| Mozilla | Firefox Esr | < 68.1.0 |
| Opensuse | Leap | 15.0 |
References
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.htmlMailing ListThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1452037ExploitIssue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-26/Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.htmlMailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.htmlMailing ListThird Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1452037ExploitIssue TrackingVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-25/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-26/Vendor Advisory
FAQ
What is CVE-2019-11738?
CVE-2019-11738 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 mali...
How severe is CVE-2019-11738?
CVE-2019-11738 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-11738?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Opensuse Leap.