SSRF via multi-port URL parsing bypass
Published Apr 5, 2022 · Updated Aug 2, 2024
SSRF in LiveHelperChat Live Helper Chat before 3.67v allows remote authenticated users to make arbitrary server-side HTTP or HTTPS requests. The lhcobrowse/proxycss.php endpoint checked parse_url results without first validating the complete base and css values, letting a multi-port URL conceal a disallowed destination port behind an allowed final port. Low-privileged access is required; the server then sends the crafted request with its own network reach, exposing otherwise restricted services.
Summary
What happened
SSRF in LiveHelperChat Live Helper Chat before 3.67v allows remote authenticated users to make arbitrary server-side HTTP or HTTPS requests. The lhcobrowse/proxycss.php endpoint checked parse_url results without first validating the complete base and css values, letting a multi-port URL conceal a disallowed destination port behind an allowed final port. Low-privileged access is required; the server then sends the crafted request with its own network reach, exposing otherwise restricted services.
The record
- CVE
- CVE-2022-1213
- Published
- Apr 5, 2022
- Updated
- Aug 2, 2024
- Vendor
- LiveHelperChat
- Product
- Live Helper Chat
- Classifications
- CWE-918
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 5, 2022CVE publishedPublication date reported by the CVE source.
- Aug 2, 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=unspecified <3.67v
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
- Multi-port URL bypass proof of conceptproof of concept · demonstrated
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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