CVE-2021-20220

undertow: Possible regression in fix for CVE-2020-10687

Published Feb 23, 2021 CVSS 3.1 · 4.8 Medium EPSS 1.2% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-1382 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.
Github GHSA Github GHSA GHSA-qjwc-v72v-fq6r HTTP request smuggling in Undertow
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 3, 2024, 5:30 PM
Reserved
Dec 17, 2020, 12:00 AM
Status
Modified
Published
Feb 23, 2021, 6:15 PM
Modified
Jun 17, 2026, 3:33 AM
Severity
Moderate
Public date
Feb 4, 2021, 12:00 AM