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CVE-2023-41317
No affected components available
The Apollo Router is a configurable, high-performance graph router written in Rust to run a federated supergraph that uses Apollo Federation 2. Affected versions are subject to a Denial-of-Service (DoS) type vulnerability which causes the Router to panic and terminate when GraphQL Subscriptions are enabled. It can be triggered when all of the following conditions are met: 1. Running Apollo Router v1.28.0, v1.28.1 or v1.29.0 ("impacted versions"); and 2. The Supergraph schema provided to the Router (either via Apollo Uplink or explicitly via other configuration) has a subscription type with root-fields defined; and 3. The YAML configuration provided to the Router has subscriptions enabled (they are disabled by default), either by setting enabled: true or by setting a valid mode within the subscriptions object (as seen in subscriptions' documentation); and 4. An anonymous (i.e., un-named) subscription operation (e.g., subscription { ... }) is received by the Router If all four of these criteria are met, the impacted versions will panic and terminate. There is no data-privacy risk or sensitive-information exposure aspect to this vulnerability. This is fixed in Apollo Router v1.29.1. Users are advised to upgrade. Updating to v1.29.1 should be a clear and simple upgrade path for those running impacted versions. However, if Subscriptions are not necessary for your Graph – but are enabled via configuration — then disabling subscriptions is another option to mitigate the risk.
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 high impact on the availability of the system.
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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