critical CVSS 9.8

CVE-2024-47167·Python vulnerability

Gradio is an open-source Python package designed for quick prototyping. This vulnerability relates to **Server-Side Request Forgery (SSRF)** in the `/queue/join` endpoint. Gradio’s `async_save_url_to_cache` function allows attackers to force the Gradio server to send HTTP requests to user-controlled URLs. This could enable attackers to target internal servers or services within a local network and possibly exfiltrate data or cause unwanted internal requests. Additionally, the content from these URLs is stored locally, making it easier for attackers to upload potentially malicious files to the server. This impacts users deploying Gradio servers that use components like the Video component which involve URL fetching. Users are advised to upgrade to `gradio>=5` to address this issue. As a workaround, users can disable or heavily restrict URL-based inputs in their Gradio applications to trusted domains only. Additionally, implementing stricter URL validation (such as allowinglist-based validation) and ensuring that local or internal network addresses cannot be requested via the `/queue/join` endpoint can help mitigate the risk of SSRF attacks.

Severity
critical
Software
Python
Fixed in
5.0.0
Published
2024-10-10

Affected versions

Until: 5.0.0

Fixed in: 5.0.0

How to fix this CVE

Update Gradio to version 5.0.0 or later to remediate the SSRF vulnerability in the /queue/join endpoint that allows remote attackers to force the server to make requests to arbitrary URLs. If immediate upgrade is not feasible, implement strict URL validation using an allowlist approach and restrict the Gradio application to accept URLs only from trusted domains. Disable or heavily restrict URL-based inputs in components like Video that perform URL fetching operations.

sudo pip install --upgrade gradio>=5.0.0

Defensia detects this vulnerability

What an exploitation attempt looks like

Sample log line indicative of exploitation attempts:

POST /queue/join HTTP/1.1.*["url"\s*:\s*"(http|https)://(?!127\.0\.0\.1|localhost|10\.|172\.1[6-9]\.|172\.2[0-9]\.|172\.3[0-1]\.|192\.168\.)[^"]*"]

WAF mitigation (if patching is not yet possible)

Add this rule to your WAF to block exploitation attempts while you schedule the patch. 

Implement WAF rules to block POST requests to /queue/join endpoints containing suspicious URL parameters pointing to internal IP ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 127.0.0.1, localhost). Additionally, rate-limit the /queue/join endpoint to prevent automated reconnaissance attacks.

How to check if you are affected

  1. Step 1: Check installed Gradio version with: pip show gradio | grep Version
  2. Step 2: Verify if your application uses URL-fetching components by searching your codebase for gr.Video(), gr.Audio(), or components with file_count or file parameters
  3. Step 3: Search application logs for unusual HTTP requests originating from the /queue/join endpoint using: grep -i 'queue/join' /var/log/application.log | grep -E '(POST|GET)'
  4. Step 4: Confirm the fix by running pip show gradio and verifying the version is 5.0.0 or higher, then restart the Gradio application service

Indicators of compromise

  • POST requests to /queue/join with 'url' parameter containing internal IP addresses
  • Unusual HTTP outbound connections from Gradio process to 169.254.169.254 (AWS metadata service)
  • Multiple sequential requests to /queue/join from single source IP within short timeframe

FAQ

What is CVE-2024-47167?

CVE-2024-47167 is a Server-Side Request Forgery (SSRF) vulnerability in Gradio versions prior to 5.0.0 that allows unauthenticated remote attackers to abuse the /queue/join endpoint and force the server to fetch content from arbitrary URLs, potentially targeting internal network services or uploading malicious files.

Is CVE-2024-47167 being actively exploited?

No, this vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog and no public exploits are available, though the critical CVSS score of 9.8 indicates organizations should prioritize patching.

What versions of Python/Gradio are affected by CVE-2024-47167?

All versions of Gradio prior to 5.0.0 are affected. The vulnerability exists in the async_save_url_to_cache function used by URL-fetching components regardless of Python version.

How do I check if my server is vulnerable to CVE-2024-47167?

Run: pip show gradio | grep Version. If the version is below 5.0.0, your installation is vulnerable. Additionally, verify if your application deploys URL-fetching components like gr.Video() or gr.Audio().

Does Defensia detect CVE-2024-47167?

Yes — Defensia's CVE advisory scanner compares installed package versions against the NVD database. If Gradio is installed on a monitored server, CVE-2024-47167 will appear in your dashboard with remediation steps.

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References

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