CVE-2017-7813 Information disclosure in Firefox

What is CVE-2017-7813?

CVE-2017-7813 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

Inside the JavaScript parser, a cast of an integer to a narrower type can result in data read from outside the buffer being parsed. This usually results in a non-exploitable crash, but can leak a limited amount of information from memory if it matches JavaScript identifier syntax. This vulnerability affects Firefox < 56.

Weakness: CWE-704, CWE-125

Which versions are affected by CVE-2017-7813?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2017-7813?

Upgrade to a fixed version.

Is CVE-2017-7813 being exploited?

There is no known exploitation of CVE-2017-7813 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-3q69-c555-hw23, UBUNTU-CVE-2017-7813.