CVE-2021-29991
N/A
N/A
Summary
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 Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Mozilla | Firefox | unspecified < 91.0.1 | affected |
| Mozilla | Thunderbird | unspecified < 91.0.1 | affected |
Weaknesses
- Header Splitting possible with HTTP/3 Responses
ADP Enrichment
CVE Program Container
Additional References
- https://www.mozilla.org/security/advisories/mfsa2021-37/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1724896
References
- https://www.mozilla.org/security/advisories/mfsa2021-37/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1724896
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