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GHSA-7wq3-jr35-275c
No affected components available
Summary
The search query parameter allows users with access to a collection to filter items based on fields they do not have permission to view. This allows the enumeration of unknown field contents.
Details
The searchable columns (numbers & strings) are not checked against permissions when injecting the where clauses for applying the search query. This leads to the possibility of enumerating those un-permitted fields.
PoC
- Create a collection with a string / numeric field, configure the permissions for the public role to not include the field created
- Create items with identifiable content in the not permitted field
- Query the collection and include the field content in the
searchparameter - See that results are returned, even tho the public user does not have permission to view the field content
Impact
This vulnerability is a very high impact, as for example Directus instances which allow public read access to the user avatar are vulnerable to have the email addresses, password hashes and potentially admin level access tokens extracted. The admin token and password hash extraction have a caveat, as string fields are only searched with a lower cased version of the search query.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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