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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: Arbitrary File Upload in Open eClass Platform. ๐ **Consequences**: Leads to Unrestricted Remote Code Execution (RCE) on the backend server.โฆ
๐ **Root Cause**: Flaw in the **H5P module's save functionality**. ๐ **CWE**: CWE-434 (Arbitrary Upload of File with Dangerous Type). โ ๏ธ **Flaw**: Lack of proper validation on uploaded files.
Q3Who is affected? (Versions/Components)
๐ข **Vendor**: gunet. ๐ฆ **Product**: Open eClass Platform. ๐ **Affected Versions**: Version **3.15 and earlier**. ๐ซ **Safe**: Versions > 3.15.
Q4What can hackers do? (Privileges/Data)
๐ **Privileges**: Full backend server access via RCE. ๐ **Data**: Complete confidentiality & integrity loss. ๐ ๏ธ **Action**: Hackers can execute arbitrary commands, install backdoors, or steal data.
Q5Is exploitation threshold high? (Auth/Config)
โก **Threshold**: **LOW**. ๐ **Network**: Attack Vector is Network (AV:N). ๐ **Auth**: No Privileges Required (PR:N). ๐๏ธ **UI**: No User Interaction Required (UI:N). ๐ **Ease**: Easy to exploit remotely.
Q6Is there a public Exp? (PoC/Wild Exploitation)
๐ **Public Exp**: No specific PoC code listed in data. ๐ **References**: GitHub commit & GHSA advisory exist. ๐ต๏ธ **Status**: Theoretical/Confirmed vulnerability, but no wild exploit code provided in this dataset.
Q7How to self-check? (Features/Scanning)
๐ **Check**: Scan for Open eClass instances. ๐ **Target**: Look for H5P module endpoints. ๐งช **Test**: Attempt file upload with malicious payloads (e.g., PHP/JSP shells).โฆ
โ **Fixed**: Yes. ๐ **Patch**: Refer to GitHub commit `4449cf8`. ๐ **Advisory**: GHSA-88c3-hp7p-grgg. ๐ **Action**: Upgrade to a version newer than 3.15 immediately.
Q9What if no patch? (Workaround)
๐ก๏ธ **Workaround**: Disable the **H5P module** if possible. ๐ซ **Restrict**: Block file upload permissions for untrusted users. ๐งฑ **WAF**: Implement strict file type filtering rules.โฆ