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CVE-2021-22696

Status Candidate

Overview

CXF supports (via JwtRequestCodeFilter) passing OAuth 2 parameters via a JWT token as opposed to query parameters (see: The OAuth 2.0 Authorization Framework: JWT Secured Authorization Request (JAR)). Instead of sending a JWT token as a "request" parameter, the spec also supports specifying a URI from which to retrieve a JWT token from via the "request_uri" parameter. CXF was not validating the "request_uri" parameter (apart from ensuring it uses "https) and was making a REST request to the parameter in the request to retrieve a token. This means that CXF was vulnerable to DDos attacks on the authorization server, as specified in section 10.4.1 of the spec. This issue affects Apache CXF versions prior to 3.4.3; Apache CXF versions prior to 3.3.10.

Related Files

Red Hat Security Advisory 2022-7273-01
Posted Nov 2, 2022
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2022-7273-01 - Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised of the Apache Tomcat Servlet container, JBoss HTTP Connector, the PicketLink Vault extension for Apache Tomcat, and the Tomcat Native library. This release of Red Hat JBoss Web Server 5.7.0 serves as a replacement for Red Hat JBoss Web Server 5.6.1. This release includes bug fixes, enhancements and component upgrades, which are documented in the Release Notes, linked to in the References. Issues addressed include denial of service and privilege escalation vulnerabilities.

tags | advisory, java, web, denial of service, vulnerability
systems | linux, redhat
advisories | CVE-2021-22696, CVE-2021-30468, CVE-2022-23181
SHA-256 | 372bd5289fb3eff1614c97fef118c148bfceb93b5f0b9c7b7e028157f6a808f1
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