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.
References
Link | Resource |
---|---|
https://bugzilla.mozilla.org/show_bug.cgi?id=1724896 | Permissions Required |
https://www.mozilla.org/security/advisories/mfsa2021-37/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
04 Nov 2021, 21:01
Type | Values Removed | Values Added |
---|---|---|
References | (MISC) https://www.mozilla.org/security/advisories/mfsa2021-37/ - Vendor Advisory | |
References | (MISC) https://bugzilla.mozilla.org/show_bug.cgi?id=1724896 - Permissions Required | |
CVSS |
v2 : v3 : |
v2 : 5.8
v3 : 8.1 |
CPE | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:* cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:* |
|
CWE | CWE-444 |
03 Nov 2021, 01:15
Type | Values Removed | Values Added |
---|---|---|
New CVE |
Information
Published : 2021-11-03 01:15
Updated : 2024-02-04 22:08
NVD link : CVE-2021-29991
Mitre link : CVE-2021-29991
CVE.ORG link : CVE-2021-29991
JSON object : View
Products Affected
mozilla
- thunderbird
- firefox
CWE
CWE-444
Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')