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CVE-2020-5289 is a medium severity vulnerability with a CVSS score of 6.5. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
It is possible for an adversary to "guess and check" the value of a model field they do not have access to assuming they can read at least one other field in the model. The adversary can construct filter expressions for an inaccessible field to filter a collection. The presence or absence of models in the returned collection can be used to reconstruct the value of the inaccessible field.
For example, a User model has two fields: name and role. The adversary has read permissions to see the name field of the User collection but not the role. By constructing a filter like the one below, the adversary can determine which users have admin role by presence or absence in the returned collection:
filter=role=="Admin"
Resolved in Elide 4.5.14 and greater.
The adversary can only access the fields if a model includes fields with different read permission levels (some less secure and some more secure). Model security can be adjusted by restricting read permissions on existing models.
Fixed in https://github.com/yahoo/elide/pull/1236
If you have any questions or comments about this advisory:
| Vendor | Product |
|---|---|
| Elide | Elide |
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