vulnerability
Red Hat JBoss EAP: CVE-2021-20220: HTTP Request/Response Smuggling
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Feb 4, 2021 | Sep 19, 2024 | Jul 2, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Feb 4, 2021
Added
Sep 19, 2024
Modified
Jul 2, 2025
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.. 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.
Solution
red-hat-jboss-eap-upgrade-latest
References
- CWE-444
- CVE-2021-20220
- https://attackerkb.com/topics/CVE-2021-20220
- URL-https://access.redhat.com/security/cve/CVE-2021-20220
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=1923133
- URL-https://access.redhat.com/errata/RHSA-2021:0872
- URL-https://access.redhat.com/errata/RHSA-2021:0873
- URL-https://access.redhat.com/errata/RHSA-2021:0874
- URL-https://access.redhat.com/errata/RHSA-2021:0885
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