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GHSA-m734-r4g6-34f9
No affected components available
Versions of loopback-connector-mongodb before 3.6.0 are vulnerable to NoSQL injection.
MongoDB Connector for LoopBack fails to properly sanitize a filter passed to query the database by allowing the dangerous $where property to be passed to the MongoDB Driver. The Driver allows the special $where property in a filter to execute JavaScript (client can pass in a malicious script) on the database Driver. This is an intended feature of MongoDB unless disabled (instructions here).
A proof of concept malicious query:
GET /POST filter={"where": {"$where": "function(){sleep(5000); return this.title.contains('Hello');}"}}
The above makes the database sleep for 5 seconds and then returns all “Posts” with the title containing the word Hello.
Recommendation
Update to version 3.6.0 or later.
Measures severity based on intrinsic characteristics of the vulnerability, independent of environment.
No exploitation activity has been observed at this time. Continue routine monitoring.
Probability that this vulnerability will be exploited in the wild within the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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