Internal endpoint access via poisoned proxy allowlist
Published Mar 27, 2024 · Updated Aug 1, 2024
Server-side request forgery in Gradio before 4.18.0 allows remote attackers to proxy requests to internal endpoints through the /proxy route. Requests to / or /config can add an X-Direct-Url value to self.replica_urls, and build_proxy_request treats that attacker-controlled entry as a safe proxy destination. The route is network-reachable without authentication or user interaction, and the demonstrated consequence is server-originated access to otherwise unreachable internal resources.
Summary
What happened
Server-side request forgery in Gradio before 4.18.0 allows remote attackers to proxy requests to internal endpoints through the /proxy route. Requests to / or /config can add an X-Direct-Url value to self.replica_urls, and build_proxy_request treats that attacker-controlled entry as a safe proxy destination. The route is network-reachable without authentication or user interaction, and the demonstrated consequence is server-originated access to otherwise unreachable internal resources.
The record
- CVE
- CVE-2024-2206
- Published
- Mar 27, 2024
- Updated
- Aug 1, 2024
- Vendor
- Gradio
- Product
- Gradio
- Classifications
- CWE-918, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 1, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <4.18
- Affected versionversion=unspecified <4.18
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Huntr Gradio proxy-route proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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