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CVE PROGRAM SOURCE RECORDUnscored

CVE-2021-29991

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 v

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Status
Published
Published
Updated
Assigning organization
mozilla

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • unspecified to < 91.0.1affected

Mozilla Thunderbird

  • unspecified to < 91.0.1affected

References