HTTP Request Smuggling Affecting undertow package, versions <2.2.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.09% (41st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-UNDERTOW-1085956
  • published16 Mar 2021
  • disclosed23 Feb 2021

Introduced: 23 Feb 2021

CVE-2021-20220  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

Upgrade Debian:unstable undertow to version 2.2.0-1 or higher.

NVD Description

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

A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.

CVSS Scores

version 3.1