CVE-2019-9799 Information disclosure in Firefox

What is CVE-2019-9799?

CVE-2019-9799 is a high-severity vulnerability in Mozilla Firefox, published on 26 Apr 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Insufficient bounds checking of data during inter-process communication might allow a compromised content process to be able to read memory from the parent process under certain conditions. This vulnerability affects Firefox < 66.

Weakness: CWE-20, CWE-125

Which versions are affected by CVE-2019-9799?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2019-9799?

Upgrade to a fixed version.

Is CVE-2019-9799 being exploited?

There is no known exploitation of CVE-2019-9799 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-2fh8-hvqx-49wh, UBUNTU-CVE-2019-9799.