cve/2020/CVE-2020-15680.md

CVE-2020-15680

Description

If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.

POC

Reference

• https://bugzilla.mozilla.org/show_bug.cgi?id=1658881
• https://bugzilla.mozilla.org/show_bug.cgi?id=1658881

Github

No PoCs found on GitHub currently.