CVE-2017-7814 Security feature bypass in Firefox
Attackers can bypass Firefox's malware protection by using blob or data URLs to trick users into downloading malicious executables.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2017-7814?
CVE-2017-7814 is a high-severity vulnerability in Debian Debian Linux, published on 11 Jun 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
File downloads encoded with "blob:" and "data:" URL elements bypassed normal file download checks though the Phishing and Malware Protection feature and its block lists of suspicious sites and files. This would allow malicious sites to lure users into downloading executables that would otherwise be detected as suspicious. This vulnerability affects Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.
Weakness: CWE-20
Which versions are affected by CVE-2017-7814?
It affects 8 products.
Products include Debian Debian Linux, Mozilla Firefox, Mozilla Thunderbird, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus and 2 more.
How do I fix CVE-2017-7814?
Upgrade to a fixed version.
Is CVE-2017-7814 being exploited?
There is no known exploitation of CVE-2017-7814 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as DEBIAN-CVE-2017-7814, GHSA-95j8-9fpj-7wc6, UBUNTU-CVE-2017-7814.