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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: Apache Unomi suffers from an **Input Validation Error** allowing **OGNL Injection**. <br>๐ฅ **Consequences**: Attackers can execute arbitrary code on the server.โฆ
๐ก๏ธ **Root Cause**: The platform allows conditions to use **OGNL scripting**. <br>โ ๏ธ **Flaw**: This allows calling static Java classes from the JDK, bypassing security controls.โฆ
๐ฆ **Affected**: Apache Unomi versions **1.5.1 and earlier**. <br>๐ **Component**: The Customer Data Platform (CDP) built with Java.
Q4What can hackers do? (Privileges/Data)
๐ **Hacker Power**: Execute **arbitrary code**. <br>๐ **Privileges**: Code runs with the **permission level of the running Java process**. This means full control over the server environment.
Q5Is exploitation threshold high? (Auth/Config)
๐ **Threshold**: **Low**. <br>๐ **Config**: Requires sending malicious OGNL payloads via the API. No complex authentication bypass mentioned, just input manipulation.
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ฃ **Public Exp?**: **YES**. <br>๐ **PoC**: Available on GitHub (e.g., `1135/unomi_exploit`) and Nuclei templates. Wild exploitation is highly likely given the PoC availability.
Q7How to self-check? (Features/Scanning)
๐ **Self-Check**: Use scanners like **Nuclei** with the CVE-2020-11975 template. <br>๐งช **Manual**: Test OGNL injection points in the Unomi API endpoints. Check version numbers against 1.5.1.
Q8Is it fixed officially? (Patch/Mitigation)
๐ฉน **Fixed?**: **YES**. <br>๐ **Patch**: Fixed in version **1.5.1**. Official security advisories and mailing list commits confirm the fix.
Q9What if no patch? (Workaround)
๐ง **No Patch?**: **Mitigation**: <br>1. **Block Access**: Restrict Unomi API access via Firewall/WAF. <br>2. **Disable OGNL**: If possible, disable scripting in conditions. <br>3.โฆ