Vulnerability CVE-2021-29991: Information
Description
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.
Severity: HIGH (8.1) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Fixed packages
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
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https://bugzilla.mozilla.org/show_bug.cgi?id=1724896 |
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https://www.mozilla.org/security/advisories/mfsa2021-37/ |
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