CVE-2022-45855: 
Java vulnerability analysis and mitigation

SpringEL injection vulnerability (CVE-2022-45855) was discovered in Apache Ambari versions 2.7.0 through 2.7.6. The vulnerability affects the metrics source component and allows authenticated users to execute arbitrary code remotely. The issue was publicly disclosed on July 10, 2023, and affects Apache Ambari's metrics monitoring functionality (NVD, Security Online).

The vulnerability is classified as a Spring Expression Language (SpringEL) injection flaw in the metrics source component. It has been assigned a CVSS v3.1 base score of 8.8 (HIGH) by NIST with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. The Apache Software Foundation assigned a slightly lower CVSS score of 8.0 (HIGH) with the vector CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H. The vulnerability is categorized under CWE-917 (Improper Neutralization of Special Elements used in an Expression Language Statement) (NVD).

The vulnerability enables malicious authenticated users to execute arbitrary code remotely in the application's context. This could potentially lead to unauthorized access to sensitive data and compromise the integrity of the Hadoop cluster that Ambari manages (Security Online).

The vulnerability requires authentication for exploitation, meaning an attacker must first have valid credentials to the system. The exploit can be triggered through the metrics source component by authenticated metrics consumers (Openwall).

Users are strongly recommended to upgrade to Apache Ambari version 2.7.7, which contains the fix for this vulnerability. This is currently the only confirmed mitigation strategy (NVD, Security Online).