CVE-2017-7788 Security feature bypass in Firefox
Attackers can bypass Content Security Policy restrictions in sandboxed iframes using srcdoc, potentially allowing unauthorized script execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-7788?
CVE-2017-7788 is a critical vulnerability in Mozilla Firefox, published on 11 Jun 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
When an "iframe" has a "sandbox" attribute and its content is specified using "srcdoc", that content does not inherit the containing page's Content Security Policy (CSP) as it should unless the sandbox attribute included "allow-same-origin". This vulnerability affects Firefox < 55.
Weakness: CWE-74
Which versions are affected by CVE-2017-7788?
It affects 1 product.
Products include Mozilla Firefox.
How do I fix CVE-2017-7788?
Upgrade to a fixed version.
Is CVE-2017-7788 being exploited?
There is no known exploitation of CVE-2017-7788 in the wild and no public exploit code.
Other vulnerabilities in Mozilla Firefox
Sources
Also known as GHSA-rcj2-hjg7-xj8p, UBUNTU-CVE-2017-7788.