CVE-2019-9797 Information disclosure in Firefox

What is CVE-2019-9797?

CVE-2019-9797 is a medium-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

Cross-origin images can be read in violation of the same-origin policy by exporting an image after using createImageBitmap to read the image and then rendering the resulting bitmap image within a canvas element. This vulnerability affects Firefox < 66.

Weakness: CWE-346

Which versions are affected by CVE-2019-9797?

It affects 1 product.

Products include Mozilla Firefox.

How do I fix CVE-2019-9797?

Upgrade to a fixed version.

Is CVE-2019-9797 being exploited?

There is no known exploitation of CVE-2019-9797 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 DEBIAN-CVE-2019-9797, GHSA-9wjj-25rq-652w, UBUNTU-CVE-2019-9797.