CVE-2020-15129 — AI Deep Analysis Summary

🚨 **Essence**: An **Open Redirect** vulnerability in Traefik's `X-Forwarded-Prefix` header handling. 📉 **Consequences**: Attackers can trick users into visiting **malicious sites**.…

🔍 **Root Cause**: **CWE-601** (Open Redirect). The flaw is a lack of proper **input validation** on the `X-Forwarded-Prefix` header.…

🏢 **Affected Vendor**: **Containous**. 📦 **Product**: **Traefik** (Reverse Proxy & Load Balancer). 📅 **Vulnerable Versions**: **1.7.26**, **2.2.8**, and **2.3.0-rc3**.…

💻 **Attacker Capabilities**: Hackers can perform **Open Redirects**. They don't need high privileges. They can redirect victims to **phishing sites** or **malware distributors**.…

🔑 **Exploitation Threshold**: **Medium**. 🌐 **Access**: Network Accessible (AV:N). 🔒 **Auth**: No Privileges Required (PR:N). 🖱️ **User Interaction**: Required (UI:R). Users must click a crafted link.…

💥 **Public Exploit**: **Yes**. A PoC is available via **ProjectDiscovery Nuclei templates**. 📜 **Link**: `https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2020/CVE-2020-15129.yaml`.…

🛡️ **Self-Check**: Use **Nuclei** with the specific CVE template. 🔎 **Manual Test**: Send requests with a malicious `X-Forwarded-Prefix` header and observe if the response redirects to an external domain.…

✅ **Official Fix**: **Yes**. The vulnerability was addressed in the release of **v2.3.0-rc3** and **v1.7.26**. 📥 **Action**: Upgrade to these versions or later.…

🚧 **No Patch Workaround**: If you cannot upgrade immediately, implement **WAF rules** to block or sanitize the `X-Forwarded-Prefix` header.…

⏳ **Urgency**: **High Priority**. 🚨 **CVSS Score**: **7.5** (High). Although AC is High, the impact on Integrity (I:H) is severe. Since it requires no auth, it's a significant risk for public-facing Traefik instances.…