CVE-2017-5387 Information disclosure in Firefox

What is CVE-2017-5387?

CVE-2017-5387 is a low-severity vulnerability in Mozilla Firefox, published on 11 Jun 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The existence of a specifically requested local file can be found due to the double firing of the "onerror" when the "source" attribute on a "<track>" tag refers to a file that does not exist if the source page is loaded locally. This vulnerability affects Firefox < 51.

Weakness: CWE-538

Which versions are affected by CVE-2017-5387?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2017-5387?

Upgrade to a fixed version.

Is CVE-2017-5387 being exploited?

There is no known exploitation of CVE-2017-5387 in the wild and no public exploit code.

Other vulnerabilities in Mozilla Firefox

• CVE-2019-11708 Mozilla Firefox and Thunderbird Sandbox Escape Exploited Critical 10.0
• CVE-2010-3765 Mozilla Multiple Products Remote Code Execution Exploited Critical 9.8
• CVE-2022-26486 Mozilla Firefox Use-After-Free Exploited Critical 9.6
• CVE-2022-26485 Mozilla Firefox Use-After-Free Exploited High 8.8
• CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Exploited High 8.8

All Mozilla Firefox vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-fgxx-ch38-43gw, UBUNTU-CVE-2017-5387.