CVE-2024-7884
7.5 · HIGHOverview
CVE-2024-7884 is a high-severity vulnerability affecting dfinity canister_developer_kit_for_the_internet_computer. It was published on September 5, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
When a canister method is called via ic_cdk::call* , a new Future CallFuture is created and can be awaited by the caller to get the execution result. Internally, the state of the Future is tracked and stored in a struct called CallFutureState. A bug in the polling implementation of the CallFuture allows multiple references to be held for this internal state and not all references were dropped before the Future is resolved. Since we have unaccounted references held, a copy of the internal state ended up being persisted in the canister's heap and thus causing a memory leak.
Impact Canisters built in Rust with ic_cdk and ic_cdk_timers are affected. If these canisters call a canister method, use timers or heartbeat, they will likely leak a small amount of memory on every such operation. In the worst case, this could lead to heap memory exhaustion triggered by an attacker. Motoko based canisters are not affected by the bug.
PatchesThe patch has been backported to all minor versions betwe
Remediation
Check the references section for vendor advisories and patches from dfinity. Update canister_developer_kit_for_the_internet_computer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| dfinity | canister_developer_kit_for_the_internet_computer | >= 0.8.0, < 0.8.2 | Affected |
Frequently Asked Questions
What is CVE-2024-7884?
CVE-2024-7884 is a high-severity vulnerability affecting dfinity canister_developer_kit_for_the_internet_computer. It was published on September 5, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-7884?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2024-7884?
Check the references section for vendor advisories and patches from dfinity. Update canister_developer_kit_for_the_internet_computer to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2024-7884?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-7884 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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