Bug 1923133 (CVE-2021-20220) - CVE-2021-20220 undertow: Possible regression in fix for CVE-2020-10687
Summary: CVE-2021-20220 undertow: Possible regression in fix for CVE-2020-10687
Status: NEW
Alias: CVE-2021-20220
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On:
Blocks: 1922477
TreeView+ depends on / blocked
Reported: 2021-02-01 13:23 UTC by Pedro Sampaio
Modified: 2021-02-18 18:45 UTC (History)
56 users (show)

Fixed In Version: Undertow 2.2.0.Final, Undertow 2.1.6.Final, Undertow 2.0.34.Final
Doc Type: If docs needed, set a value
Doc Text:
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.
Clone Of:
Last Closed:

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Description Pedro Sampaio 2021-02-01 13:23:21 UTC
A regression issue reintroduced undertow's CVE-2020-10687 after undertow 2.0.30.SP4.

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