Parse Server is an open source backend that can be deployed to any infrastructure that can run Node.js. Prior to 9.6.0-alpha.12 and 8.6.38, an unauthenticated attacker can take over any user account that was created with an authentication provider that does not validate the format of the user identifier (e.g. anonymous authentication). By sending a crafted login request, the attacker can cause the server to perform a pattern-matching query instead of an exact-match lookup, allowing the attacker to match an existing user and obtain a valid session token for that users account. Both MongoDB and PostgreSQL database backends are affected. Any Parse Server deployment that allows anonymous authentication (enabled by default) is vulnerable. This vulnerability is fixed in 9.6.0-alpha.12 and 8.6.38.
Weakness
The product generates a query intended to access or manipulate data in a data store such as a database, but it does not neutralize or incorrectly neutralizes special elements that can modify the intended logic of the query.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Parse-server | Parseplatform | * | 8.6.38 (excluding) |
| Parse-server | Parseplatform | 9.0.0 (including) | 9.6.0 (excluding) |
| Parse-server | Parseplatform | 9.6.0-alpha1 (including) | 9.6.0-alpha1 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha10 (including) | 9.6.0-alpha10 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha11 (including) | 9.6.0-alpha11 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha2 (including) | 9.6.0-alpha2 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha3 (including) | 9.6.0-alpha3 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha4 (including) | 9.6.0-alpha4 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha5 (including) | 9.6.0-alpha5 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha6 (including) | 9.6.0-alpha6 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha7 (including) | 9.6.0-alpha7 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha8 (including) | 9.6.0-alpha8 (including) |
| Parse-server | Parseplatform | 9.6.0-alpha9 (including) | 9.6.0-alpha9 (including) |
Extended Description
Depending on the capabilities of the query language, an attacker could inject additional logic into the query to:
The ability to execute additional commands or change which entities are returned has obvious risks. But when the product logic depends on the order or number of entities, this can also lead to vulnerabilities. For example, if the query expects to return only one entity that specifies an administrative user, but an attacker can change which entities are returned, this could cause the logic to return information for a regular user and incorrectly assume that the user has administrative privileges. While this weakness is most commonly associated with SQL injection, there are many other query languages that are also subject to injection attacks, including HTSQL, LDAP, DQL, XQuery, Xpath, and “NoSQL” languages.