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Q1What is this vulnerability? (Essence + Consequences)
๐จ **Essence**: Reflected Cross-Site Scripting (RXSS) in XWiki Platform. <br>๐ฅ **Consequences**: Attackers inject malicious scripts via the `rev` parameter.โฆ
๐ก๏ธ **Root Cause**: CWE-79 (Improper Neutralization of Input During Web Page Generation). <br>๐ **Flaw**: The `rev` parameter in the content menu is **not escaped** properly.โฆ
๐ข **Affected**: XWiki Platform (French XWiki Foundation). <br>๐ฆ **Component**: Wiki platform for creating Web collaboration apps. <br>โ ๏ธ **Scope**: Any installation running vulnerable versions prior to the fix commit.
Q4What can hackers do? (Privileges/Data)
๐ป **Hackers Can**: <br>1. Execute arbitrary actions **in the user's name**. <br>2. Perform **Remote Code Execution (Groovy)** if the victim has programming privileges. <br>3. Steal data or deface the site.โฆ
๐ **Threshold**: Medium. <br>๐ค **Auth**: No authentication required for the vulnerability itself (PR:N). <br>๐ค **UI**: Requires **User Interaction** (UI:R). The victim must click a specially crafted link.โฆ
๐ข **Public Exp?**: Yes. <br>๐ **PoC Available**: Proof of Concept exists via ProjectDiscovery Nuclei templates. <br>๐ **Wild Exploitation**: Possible if users are tricked into clicking malicious URLs.โฆ
๐ **Self-Check**: <br>1. Scan for XWiki instances. <br>2. Look for the `rev` parameter in URLs without proper encoding. <br>3. Use Nuclei template: `CVE-2023-46732.yaml`. <br>4.โฆ
โ **Fixed?**: Yes. <br>๐ง **Patch**: Official fix committed in XWiki Platform. <br>๐ **Reference**: See GitHub Advisory GHSA-j9rc-w3wv-fv62 and Commit `04e325d57d4bcb6ab79bddcafbb19032474c2a55`.โฆ