5.8

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 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.

Data is provided by the National Vulnerability Database (NVD)
RedhatUndertow Version < 2.0.34
RedhatUndertow Version >= 2.1.0 < 2.1.6
NetappActive Iq Unified Manager Version- SwPlatformlinux
NetappActive Iq Unified Manager Version- SwPlatformvmware_vsphere
NetappActive Iq Unified Manager Version- SwPlatformwindows
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 0.31% 0.513
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 4.8 2.2 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
nvd@nist.gov 5.8 8.6 4.9
AV:N/AC:M/Au:N/C:P/I:P/A:N
CWE-444 Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.