Permissions, Privileges, and Access Controls in Mozilla Firefox - CVE-2019-17000
Published: October 23, 2019
Vulnerability identifier: #VU22170
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2019-17000
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists due to the object tag with a data URI does not correctly inherit the document's Content Security Policy. A remote attacker can use a specually crafted website to bypass a cross-origin frame if the document's policy explicitly allowed data: URIs.
Affected software
Mozilla Firefox
Arch Linux
firefox (Ubuntu package)
firefox (Alpine package)
Arch Linux
firefox (Ubuntu package)
firefox (Alpine package)
How to mitigate CVE-2019-17000
Install updates from vendor's website.
Mozilla Firefox - update to 70.0
firefox (Ubuntu package) - addressed in versions 70.0+build2-0ubuntu0.16.04.1, 70.0+build2-0ubuntu0.18.04.1, 70.0+build2-0ubuntu0.19.04.1, 70.0+build2-0ubuntu0.19.10.1
firefox (Ubuntu package) - addressed in versions 70.0+build2-0ubuntu0.16.04.1, 70.0+build2-0ubuntu0.18.04.1, 70.0+build2-0ubuntu0.19.04.1, 70.0+build2-0ubuntu0.19.10.1