Description (CNA)
Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers. This allowed for a header splitting attack against servers using HTTP/3. This vulnerability affects Firefox < 91.0.1 and Thunderbird < 91.0.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Mozilla / Firefox | affected unspecified before 91.0.1 |
| Mozilla / Thunderbird | affected unspecified before 91.0.1 |
CWE
No CWE identifiers supplied.
References
- https://www.mozilla.org/security/advisories/mfsa2021-37/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1724896
ADP enrichment
No English description supplied.