Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Mozilla / Firefox | affected unspecified before 82 |
CWE
No CWE identifiers supplied.
References
- https://www.mozilla.org/security/advisories/mfsa2020-45/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1658881
ADP enrichment
No English description supplied.