CVE-2017-5425 Information disclosure in Firefox

High 7.5 Published Updated

A sandbox escape in Firefox on OS X allows attackers to read personal or temporary data from specific subdirectories of /private/var.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2017-5425?

CVE-2017-5425 is a high-severity 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

The Gecko Media Plugin sandbox allows access to local files that match specific regular expressions. On OS OX, this matching allows access to some data in subdirectories of "/private/var" that could expose personal or temporary data. This has been updated to not allow access to "/private/var" and its subdirectories. Note: this issue only affects OS X. Other operating systems are not affected. This vulnerability affects Firefox < 52 and Thunderbird < 52.

Weakness: CWE-200

Which versions are affected by CVE-2017-5425?

It affects 2 products.

Products include Mozilla Firefox, Mozilla Thunderbird.

How do I fix CVE-2017-5425?

Upgrade to a fixed version.

Is CVE-2017-5425 being exploited?

There is no known exploitation of CVE-2017-5425 in the wild and no public exploit code.

All Mozilla Firefox vulnerabilities

Sources

Also known as GHSA-5hrj-7m57-cr8j.

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