CVE-2019-11742 Information disclosure in Firefox

What is CVE-2019-11742?

CVE-2019-11742 is a medium-severity vulnerability in Mozilla Firefox, published on 27 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

A same-origin policy violation occurs allowing the theft of cross-origin images through a combination of SVG filters and a &lt;canvas&gt; element due to an error in how same-origin policy is applied to cached image content. The resulting same-origin policy violation could allow for data theft. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Weakness: CWE-829

Which versions are affected by CVE-2019-11742?

It affects 3 products.

Products include Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.

How do I fix CVE-2019-11742?

Upgrade to a fixed version.

Is CVE-2019-11742 being exploited?

There is no known exploitation of CVE-2019-11742 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-2019-11742, GHSA-vcf4-987q-qj6p, UBUNTU-CVE-2019-11742.