Description
In the XSS Protection API module before 1.0.12 in Apache Sling, the method XSS.getValidXML() uses an insecure SAX parser to validate the input string, which allows for XXE attacks in all scripts which use this method to validate user input, potentially allowing an attacker to read sensitive data on the filesystem, perform same-site-request-forgery (SSRF), port-scanning behind the firewall or DoS the application.
Remediation
References
http://www.securityfocus.com/bid/99873
https://lists.apache.org/thread.html/b72c3a511592ec70729b3ec2d29302b6ce87bbeab62d4745617a6bd0%40%3Cdev.sling.apache.org%3E
Related Vulnerabilities
CVE-2013-2135 Vulnerability in maven package org.apache.struts.xwork:xwork-core
CVE-2017-18353 Vulnerability in npm package rendertron-middleware
CVE-2018-3723 Vulnerability in npm package defaults-deep
CVE-2021-23447 Vulnerability in npm package teddy
CVE-2019-10305 Vulnerability in maven package com.xebialabs.xl-deploy:jenkins-dependendencies