CVE-2018-12370 Cross-site request forgery in Firefox

High 8.8 Published Updated

Attackers can bypass CSRF protections in Firefox Reader View by triggering payloads upon exit, potentially leading to unauthorized actions.

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-2018-12370?

CVE-2018-12370 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 18 Oct 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

In Reader View SameSite cookie protections are not checked on exiting. This allows for a payload to be triggered when Reader View is exited if loaded by a malicious site while Reader mode is active, bypassing CSRF protections. This vulnerability affects Firefox < 61.

Weakness: CWE-352

Which versions are affected by CVE-2018-12370?

It affects 2 products.

Products include Canonical Ubuntu Linux, Mozilla Firefox.

How do I fix CVE-2018-12370?

Upgrade to a fixed version.

Is CVE-2018-12370 being exploited?

There is no known exploitation of CVE-2018-12370 in the wild and no public exploit code.

All Canonical Ubuntu Linux vulnerabilities

Sources

Also known as GHSA-v7w8-65gc-378f, UBUNTU-CVE-2018-12370.

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