Cross-origin connection via spoofed localhost origin
Published Oct 6, 2021 · Updated Aug 4, 2024
Authentication bypass in Gate One 1.2.0 allows remote authenticated users to connect from unlisted hosts by spoofing a localhost origin. The WebSocket origin check trusts the hostname supplied by the embedding page instead of verifying the client's network address, so a page served as localhost matches the allowlist. Exploitation requires API authentication with valid API keys and a configuration that permits localhost; the result is a Gate One session from an otherwise blocked host.
Summary
What happened
Authentication bypass in Gate One 1.2.0 allows remote authenticated users to connect from unlisted hosts by spoofing a localhost origin. The WebSocket origin check trusts the hostname supplied by the embedding page instead of verifying the client's network address, so a page served as localhost matches the allowlist. Exploitation requires API authentication with valid API keys and a configuration that permits localhost; the result is a Gate One session from an otherwise blocked host.
The record
- CVE
- CVE-2020-19003
- Published
- Oct 6, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-290, T1190
- Attack vector
- network
- Privileges
- Unavailable
Timeline
How it unfolded
- Oct 6, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- Gate One Whitelist Bypass reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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