Description
It is possible to inject malicious OGNL or MVEL scripts into the /context.json public endpoint. This was partially fixed in 1.5.1 but a new attack vector was found. In Apache Unomi version 1.5.2 scripts are now completely filtered from the input. It is highly recommended to upgrade to the latest available version of the 1.5.x release to fix this problem.
Remediation
References
http://unomi.apache.org./security/cve-2020-13942.txt
http://www.openwall.com/lists/oss-security/2020/11/24/5
https://advisory.checkmarx.net/advisory/CX-2020-4284
https://lists.apache.org/thread.html/r08a4057ff7196b8880117edaa4b6207cbd36ed692d8dd1f5a56b4d0f%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cdev.unomi.apache.org%3E
https://lists.apache.org/thread.html/r4a8fa91836687eaca42b5420a778ca8c8fd3a3740e4cf4401acc9118%40%3Cusers.unomi.apache.org%3E
https://lists.apache.org/thread.html/r79672c25e0ef9bb4b9148376281200a8e61c6d5ef5bb705e9a363460%40%3Ccommits.unomi.apache.org%3E
https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cdev.unomi.apache.org%3E
https://lists.apache.org/thread.html/rcb6d2eafcf15def433aaddfa06738e5faa5060cef2647769e178999a%40%3Cusers.unomi.apache.org%3E
Related Vulnerabilities
CVE-2022-43441 Vulnerability in maven package org.webjars.npm:sqlite3
CVE-2022-31139 Vulnerability in maven package io.github.karlatemp:unsafe-accessor
CVE-2021-3827 Vulnerability in maven package org.keycloak:keycloak-services
CVE-2020-2270 Vulnerability in maven package org.jenkins-ci.plugins:clearcase-release
CVE-2020-16022 Vulnerability in maven package org.webjars.npm:electron