CVE-2018-5164 Cross-site scripting in Firefox
An attacker can execute scripts in Firefox by bypassing Content Security Policy via multipart content, leading to cross-site scripting attacks.
- 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-2018-5164?
CVE-2018-5164 is a medium-severity cross-site scripting vulnerability in Canonical Ubuntu Linux, published on 11 Jun 2018. 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
Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the "multipart/x-mixed-replace" MIME type. This could allow for script to run where CSP should block it, allowing for cross-site scripting (XSS) and other attacks. This vulnerability affects Firefox < 60.
Weakness: CWE-79
Which versions are affected by CVE-2018-5164?
It affects 2 products.
Products include Canonical Ubuntu Linux, Mozilla Firefox.
How do I fix CVE-2018-5164?
Upgrade to a fixed version.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2018-5164 being exploited?
There is no known exploitation of CVE-2018-5164 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-qqvm-q62q-qw92, UBUNTU-CVE-2018-5164.