CVE-2021-20220

published 2021-02-23

CVE-2021-20220: 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…

Priority P4 25 medium 4.8 CVSS 3.1

AV N AC H PR N UI N S U C L I L A N

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.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
debian	undertow	< undertow 2.2.0-1 (forky)	undertow 2.2.0-1 (forky)
redhat	undertow	< 2.0.34	2.0.34
redhat	undertow	>= 0 < 2.2.0-1	2.2.0-1
redhat	undertow	>= 2.1.0 < 2.1.6	2.1.6

CVSS provenance

nvd v3.1 4.8 MEDIUM CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

nvd v2.0 5.8 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:N

ghsa 6.5 MEDIUM

osv 6.5 MEDIUM

vendor_debian 6.5 MEDIUM

vendor_redhat 6.5 MEDIUM

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CWE-444