Introspection in schema validation in Apollo Server
We encourage all users of Apollo Server to read this advisory in its entirety to understand the impact. The Resolution section contains details on patched versions.
Impact
If subscriptions: false is passed to the ApolloServer constructor options, there is no impact. If implementors were not expecting validation rules to be enforced on the WebSocket subscriptions transport and are unconcerned about introspection being enabled on the WebSocket subscriptions transport (or were not expecting that), then this advisory is not applicable. If introspection: true is passed to the ApolloServer constructor options, the impact is limited to user-provided validation rules (i.e., using validationRules) since there would be no expectation that introspection was disabled.
The enforcement of user-provided validation rules on the HTTP transport is working as intended and is unaffected by this advisory. Similarly, disabling introspection on the HTTP transport is working as intended and is unaffected by this advisory.
Note: Unless subscriptions: false is explicitly passed to the constructor parameters of new ApolloServer({ ... }), subscriptions are enabled by default, whether or not there is a Subscription type present in the schema. As an alternative to upgrading to a patched version, see the Workarounds section below to disable subscriptions if it is not necessary.
In cases where subscriptions: false is not explicitly set, the subscription server is impacted since validation rules which are enforced on the main request pipeline within Apollo Server were not being passed to the SubscriptionServer.create invocation (seen here, prior to the patch).
The omitted validation rules for the subscription server include any validationRules passed by implementors to the ApolloServer constructor which were expected to be enforced on the subscriptions WebSocket endpoint. Additionally, because an internal NoIntrospection validation rule is used to disable introspection, it would have been possible to introspect a server on the WebSocket endpoint that the SubscriptionServer creates even though it was not possible on other transports (e.g. HTTP).
The severity of risk depends on whether sensitive information is being stored in the schema itself. The contents of schema descriptions, or secrets which might be revealed by the names of types or field names within those types, will determine the risk to individual implementors.
Affected packages
The bug existed in apollo-server-core versions prior to version 2.14.2, however, this means all integration packages (e.g., apollo-server-express, etc.) prior to version 2.14.2 which depend on apollo-server-core for their subscriptions support are affected. This includes the apollo-server package that automatically provides an Express server.
Note: This release is is related to a GitHub Security Advisory published by the Apollo Server team. Please read the attached advisory to understand the impact.
⚠️ SECURITY: Pass all schema validation rules to the subscription server, including validation rules that restrict introspection when introspection is meant to be disabled. Read the full GitHub Security Advisory for details.
apollo-server-core / apollo-server-plugin-base: Add support for willResolveField and corresponding end-handler within executionDidStart. This brings the remaining bit of functionality that was previously only available from graphql-extensions to the new plugin API. The graphql-extensions API (which was never documented) will be deprecated in Apollo Server 3.x. To see the documentation for the request pipeline API, see its documentation. For more details, see the attached PR. [PR #3988](apollographql/apollo-server#3988)
apollo-server-core: Deprecate graphql-extensions. All internal usages of the graphql-extensions API have been migrated to the request pipeline plugin API. For any implementor-supplied extensions, a deprecation warning will be printed once per-extension, per-server-startup, notifying of the intention to deprecate. Extensions should migrate to the plugin API, which is outlined in its documentation. [PR #4135](apollographql/apollo-server#4135)
apollo-engine-reporting: Currently only for non-federated graphs.
Added an experimental schema reporting option,
experimental_schemaReporting, for Apollo Graph Manager users. During
this experiment, we'd appreciate testing and feedback from current and new
users of the schema registry!
Prior to the introduction of this feature, the only way to get schemas into
the schema registry in Apollo Graph Manager was to use the CLI and run
apollo schema:push. Apollo schema reporting protocol is a new
specification for GraphQL servers to automatically report schemas to the
Apollo Graph Manager schema registry.
To enable schema reporting, provide a Graph Manager API key (available
free from Apollo Graph Manager) in the
APOLLO_KEY environment variable and set the experimental_schemaReporting
option to true in the Apollo Server constructor options, like so:
const server = new ApolloServer({
typeDefs,
resolvers,
engine: {
experimental_schemaReporting: true,
/* Other existing options can remain the same. */
},
});
When enabled, a schema reporter is initiated by the apollo-engine-reporting agent. It will loop until the ApolloServer instance is stopped, periodically calling back to Apollo Graph Manager to send information. The life-cycle of this reporter is managed by the agent.
For more details on the implementation of this new protocol, see the PR which
introduced it to Apollo Server and the preview documentation.
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Bumps apollo-server-express from 2.11.0 to 2.14.2. This update includes a security fix.
Vulnerabilities fixed
Sourced from The GitHub Security Advisory Database.
Changelog
Sourced from apollo-server-express's changelog.
Commits
a17f26b
Release7aaca56
Update@apollo/gateway
and@apollo/federation
CHANGELOG before publish.354d991
Update CHANGELOG.md for subscription validation rules to Security Advisory.04fab28
Merge remote-tracking branch 'origin/master' into advisory-fix-102f1fb6
chore(deps): update dependency gatsby to v2.22.15 (#4187)eadbfc3
chore(deps): update dependency gatsby to v2.22.13 (#4181)d979a9e
chore(deps): update dependency @types/lodash to v4.14.154 (#4184)68ff8e5
chore(deps): update dependency ioredis to v4.17.3 (#4182)00a056a
chore(deps): update dependency @types/lodash to v4.14.153 (#4180)c0aa7c0
chore(deps): update dependency @azure/functions to v1.2.2 (#4179)Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
.Dependabot commands and options
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