VulnerabilityModified
CVE-2019-17000
This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs.
MEDIUM 6.1EPSS 0.81%
Does this matter?
Lower severity and a low EPSS score (0.81%). Track it; it rarely justifies an emergency change on its own.
Description
An object tag with a data URI did not correctly inherit the document's Content Security Policy. This allowed a CSP bypass in a cross-origin frame if the document's policy explicitly allowed data: URIs. This vulnerability affects Firefox < 70.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.81% probability · 55th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- mozilla/firefox
- Source
- security@mozilla.org
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1441468Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1441468Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2019-34/Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.