HTTP Request Smuggling Affecting firefox package, versions <92.0.1-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.16% (54th percentile)

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  • Snyk IDSNYK-ALPINE320-FIREFOX-7011268
  • published23 May 2024
  • disclosed3 Nov 2021

Introduced: 3 Nov 2021

CVE-2021-29991  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 firefox to version 92.0.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

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.

CVSS Scores

version 3.1