CVE-2019-17000 Security feature bypass in Firefox
Attackers can bypass Content Security Policy in cross-origin frames using data URIs in object tags, requiring explicit CSP allowance for data URIs.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2019-17000?
CVE-2019-17000 is a medium-severity vulnerability in Mozilla Firefox, published on 8 Jan 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2019-17000?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2019-17000?
Upgrade to a fixed version.
Is CVE-2019-17000 being exploited?
There is no known exploitation of CVE-2019-17000 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-5v69-m66w-jfqv, UBUNTU-CVE-2019-17000.