CVE-2019-8449 — AI Deep Analysis Summary

🚨 **What is this vulnerability?** * **Essence:** Access Control Error in Atlassian Jira. * **Target:** The `/rest/api/latest/groupuserpicker` resource. * **Consequence:** Unauthenticated attackers can **enumerate …

🛡️ **Root Cause? (CWE/Flaw)** * **Flaw:** Improper Access Control. * **CWE:** Not explicitly mapped in data, but clearly an **Information Disclosure** flaw. * **Why:** The system fails to verify if the requester h…

📦 **Who is affected? (Versions/Components)** * **Vendor:** Atlassian. * **Product:** Jira (Defect tracking system). * **Affected Versions:** **Before 8.4.0**. * **Specific Range:** Versions **2.1 through 8.3.4**…

💻 **What can hackers do? (Privileges/Data)** * **Action:** Enumerate valid usernames. * **Data Leaked:** User identity information. * **Privilege:** **No authentication required** (Remote/Unauthenticated). * **N…

🔓 **Is exploitation threshold high? (Auth/Config)** * **Threshold:** **LOW**. * **Authentication:** **Not Required** 🚫🔑. * **Complexity:** Simple HTTP request to the API endpoint. * **Ease:** Automated tools exi…

💣 **Is there a public Exp? (PoC/Wild Exploitation)** * **Yes!…

🔍 **How to self-check? (Features/Scanning)** * **Manual Test:** Send a GET request to `/rest/api/latest/groupuserpicker?…

🩹 **Is it fixed officially? (Patch/Mitigation)** * **Fix:** Yes. * **Solution:** Upgrade Jira to **version 8.4.0 or later**. * **Reference:** Atlassian JIRA issue JRASERVER-69796 confirms the fix. * **Action:** …

🚧 **What if no patch? (Workaround)** * **Network Level:** Block external access to the `/rest/api/latest/` endpoint if possible. * **WAF:** Configure Web Application Firewall rules to deny requests to `groupuserpick…

⚡ **Is it urgent? (Priority Suggestion)** * **Priority:** **HIGH** 🔴. * **CVSS Score:** 5.0 (Medium), but **Unauthenticated** access makes it dangerous. * **Reason:** Easy to exploit + leads to user enumeration (p…