CVE-2021-41308: 
JIRA vulnerability analysis and mitigation

CVE-2021-41308 is a Broken Access Control vulnerability affecting Atlassian Jira Server and Data Center. The vulnerability was discovered and disclosed in October 2021, allowing authenticated non-administrator remote attackers to edit the File Replication settings through the ReplicationSettings!default.jspa endpoint. The affected versions include releases before version 8.6.0, versions from 8.7.0 to before 8.13.12, and versions from 8.14.0 to before 8.20.1 (NVD, Jira Issue).

The vulnerability is classified as a Broken Access Control issue (CWE-285) with a CVSS v3.1 Base Score of 6.5 (Medium), characterized by the vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N. This indicates that the vulnerability requires low attack complexity, needs low privileges, and can be exploited remotely without user interaction. The impact primarily affects integrity, with no direct impact on confidentiality or availability (NVD).

The vulnerability allows authenticated users without administrative privileges to modify File Replication settings in Jira Server and Data Center installations. This unauthorized access to configuration settings could potentially lead to system misconfigurations and security compromises (Jira Issue).

Atlassian has released fixed versions to address this vulnerability. Users should upgrade to version 8.6.0 or later, version 8.13.12 or later, or version 8.20.1 or later depending on their current version track (Jira Issue).