A code injection vulnerability exists in the Ambari Alert Definition feature, allowing authenticated users to inject and execute arbitrary shell commands. The vulnerability arises when defining alert scripts, where the script filename field is executed using `sh -c`. An attacker with authenticated access can exploit this vulnerability to inject malicious commands, leading to remote code execution on the server. The issue has been fixed in the latest versions of Ambari.

An XML External Entity (XXE) vulnerability exists in the Ambari/Oozie project, allowing an attacker to inject malicious XML entities. This vulnerability occurs due to insecure parsing of XML input using the `DocumentBuilderFactory` class without disabling external entity resolution. An attacker can exploit this vulnerability to read arbitrary files on the server or perform server-side request forgery (SSRF) attacks. The issue has been fixed in both Ambari 2.7.9 and the trunk branch.

A remote code injection vulnerability exists in the Ambari Metrics and AMS Alerts feature, allowing authenticated users to inject and execute arbitrary code. The vulnerability occurs when processing alert definitions, where malicious input can be injected into the alert script execution path. An attacker with authenticated access can exploit this vulnerability to execute arbitrary commands on the server. The issue has been fixed in the latest versions of Ambari.

Lack of proper input validation and constraint enforcement in Apache Ambari prior to 2.7.8    Impact : As it will be stored XSS, Could be exploited to perform unauthorized actions, varying from data access to session hijacking and delivering malicious payloads. Users are recommended to upgrade to version 2.7.8 which fixes this issue.

Malicious code injection in Apache Ambari in prior to 2.7.8. Users are recommended to upgrade to version 2.7.8, which fixes this issue. Impact: A Cluster Operator can manipulate the request by adding a malicious code injection and gain a root over the cluster main host.