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.

XML External Entity injection in apache ambari versions <= 2.7.7, Users are recommended to upgrade to version 2.7.8, which fixes this issue. More Details: Oozie Workflow Scheduler had a vulnerability that allowed for root-level file reading and privilege escalation from low-privilege users. The vulnerability was caused through lack of proper user input validation. This vulnerability is known as an XML External Entity (XXE) injection attack. Attackers can exploit XXE vulnerabilities to read arbitrary files on the server, including sensitive system files. In theory, it might be possible to use this to escalate privileges.

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.

SpringEL injection in the metrics source in Apache Ambari version 2.7.0 to 2.7.6 allows a malicious authenticated user to execute arbitrary code remotely. Users are recommended to upgrade to 2.7.7.

SpringEL injection in the server agent in Apache Ambari version 2.7.0 to 2.7.6 allows a malicious authenticated user to execute arbitrary code remotely. Users are recommended to upgrade to 2.7.7.

In Apache Ambari versions 2.6.2.2 and earlier, malicious users can construct file names for directory traversal and traverse to other directories to download files.

A cross-site scripting issue was found in Apache Ambari Views. This was addressed in Apache Ambari 2.7.4.