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EUVD-2021-16450 · Published Nov 3, 2021
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.
Technologies
Mozilla FirefoxMozilla Thunderbird
Weaknesses
CWE-444
CVSS scores
- v3.18.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N - v2.05.8
AV:N/AC:M/Au:N/C:P/I:P/A:N
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access
References
Potentially impacted assets
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