CVE-2015-4518 Cross-site scripting in n/a
Remote attackers can bypass Content Security Policy and execute cross-site scripting attacks in Firefox Reader View via SVG animations.
- 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-2015-4518?
CVE-2015-4518 is a medium-severity cross-site scripting vulnerability in Mozilla Firefox, published on 5 Nov 2015. 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
The Reader View implementation in Mozilla Firefox before 42.0 has an improper whitelist, which makes it easier for remote attackers to bypass the Content Security Policy (CSP) protection mechanism and conduct cross-site scripting (XSS) attacks via vectors involving SVG animations and the about:reader URL.
Weakness: CWE-79
Which versions are affected by CVE-2015-4518?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2015-4518?
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-2015-4518 being exploited?
There is no known exploitation of CVE-2015-4518 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-23c8-qcpq-5v6v, UBUNTU-CVE-2015-4518.