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.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
CVE-2021-20220 - Medium Severity Vulnerability
Vulnerable Library - undertow-core-2.0.27.Final.jar
Undertow
Library home page: http://www.jboss.org/
Path to dependency file: /webgoat-integration-tests/pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/undertow/undertow-core/2.0.27.Final/undertow-core-2.0.27.Final.jar
Dependency Hierarchy: - webgoat-server-v8.0.0-SNAPSHOT.jar (Root Library) - webgoat-container-v8.0.0-SNAPSHOT.jar - spring-boot-starter-undertow-2.2.0.RELEASE.jar - :x: **undertow-core-2.0.27.Final.jar** (Vulnerable Library)
Found in HEAD commit: 07636efbf8861de2f88ba2e36e79c8580fde73f5
Vulnerability Details
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.
Publish Date: 2021-02-23
URL: CVE-2021-20220
CVSS 3 Score Details (4.8)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: None
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://github.com/advisories/GHSA-qjwc-v72v-fq6r
Release Date: 2021-02-23
Fix Resolution: io.undertow:undertow-core:2.0.34.Final,2.1.6.Final
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