Lars Krapf

Name of the Vulnerable Software and Affected Versions: Apache Jackrabbit versions prior to 2.23.2 Description: The software contains Blind XXE vulnerabilities in jackrabbit-spi-commons and jackrabbit-core due to the use of an unsecured document build to load privileges. Recommendations: Upgrade to version 2.20.17 (Java 8). Upgrade to version 2.22.1 (Java 11). Upgrade to version 2.23.2 (Java 11, beta versions).

The SlingRequestDispatcher doesn't correctly implement the RequestDispatcher API, resulting in include-based cross-site scripting issues on the Apache Sling level. An attacker who can include a resource with a specific content-type and control the include path can exploit this issue, leading to privilege escalation to administrative power.

The issue is related to HTTP Request Smuggling attacks, which can occur when mod proxy is enabled along with certain RewriteRule or ProxyPassMatch configurations. These configurations can allow an attacker to bypass access controls in the proxy server, proxy unintended URLs to existing origin servers, and perform cache poisoning. The vulnerability can be exploited when a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-inserted into the proxied request-target using variable substitution. For example, a configuration like RewriteEngine on RewriteRule "^/here/(.*)" "http://example.com:8080/elsewhere?$1"; [P] ProxyPassReverse /here/ http://example.com:8080/ can be vulnerable. Approximately 33,652,790 results are affected.