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.
History

No history.

cve-icon MITRE Information

Status: PUBLISHED

Assigner: mozilla

Published: 2021-11-03T00:04:17

Updated: 2021-11-03T00:04:17

Reserved: 2021-04-01T00:00:00


Link: CVE-2021-29991

JSON object: View

cve-icon NVD Information

Status : Analyzed

Published: 2021-11-03T01:15:07.060

Modified: 2021-11-04T21:01:32.743


Link: CVE-2021-29991

JSON object: View

cve-icon Redhat Information

No data.

CWE