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Publish GHSA-rwq6-crjg-9cpw
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advisory-database[bot]
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{
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"schema_version": "1.4.0",
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"id": "GHSA-rwq6-crjg-9cpw",
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"modified": "2024-09-05T16:44:28Z",
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"published": "2024-09-05T16:44:27Z",
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"aliases": [
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"CVE-2024-7884"
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],
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"summary": "ic-cdk has a memory leak when calling a canister method via `ic_cdk::call`",
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"details": "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. \n\n### Impact\nCanisters 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.**\n\nMotoko based canisters are not affected by the bug.\n\n### Patches\nThe patch has been backported to all minor versions between `>= 0.8.0, <= 0.15.0`. The patched versions available are `0.8.2, 0.9.3, 0.10.1, 0.11.6, 0.12.2, 0.13.5, 0.14.1, 0.15.1` and their previous versions have been yanked. \n\n### Workarounds\nThere are no known workarounds at the moment. Developers are recommended to upgrade their canister as soon as possible to the latest available patched version of `ic_cdk` to avoid running out of Wasm heap memory. \n\n> [!NOTE] \n> Upgrading the canisters (without updating `ic_cdk`) also frees the leaked memory but it's only a temporary solution.\n\n### Referencesas\n- [dfinity/cdk-rs/pull/509](https://github.com/dfinity/cdk-rs/pull/509)\n- [ic_cdk docs](https://docs.rs/ic-cdk/latest/ic_cdk/)\n- [Internet Computer Specification](https://internetcomputer.org/docs/current/references/ic-interface-spec)",
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"severity": [
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{
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"type": "CVSS_V3",
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"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
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},
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{
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"type": "CVSS_V4",
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"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
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}
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],
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"affected": [
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.8.0"
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},
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{
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"fixed": "0.8.2"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.9.0"
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},
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{
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"fixed": "0.9.3"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.10.0"
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},
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{
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"fixed": "0.10.1"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.11.0"
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},
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{
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"fixed": "0.11.6"
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}
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]
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}
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],
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"database_specific": {
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"last_known_affected_version_range": "< 0.11.5"
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}
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.12.0"
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},
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{
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"fixed": "0.12.2"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.13.0"
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},
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{
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"fixed": "0.13.5"
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}
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]
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}
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],
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"database_specific": {
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"last_known_affected_version_range": "< 0.13.4"
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}
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.14.0"
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},
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{
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"fixed": "0.14.1"
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}
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]
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}
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]
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},
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{
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"package": {
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"ecosystem": "crates.io",
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"name": "ic_cdk"
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},
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"ranges": [
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{
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"type": "ECOSYSTEM",
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"events": [
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{
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"introduced": "0.15.0"
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},
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{
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"fixed": "0.15.1"
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}
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]
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}
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]
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}
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],
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"references": [
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{
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"type": "WEB",
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"url": "https://github.com/dfinity/cdk-rs/security/advisories/GHSA-rwq6-crjg-9cpw"
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},
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{
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"type": "ADVISORY",
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"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-7884"
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},
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{
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"type": "WEB",
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"url": "https://github.com/dfinity/cdk-rs/pull/509"
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},
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{
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"type": "WEB",
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"url": "https://docs.rs/ic-cdk/latest/ic_cdk"
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},
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{
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"type": "PACKAGE",
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"url": "https://github.com/dfinity/cdk-rs"
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},
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{
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"type": "WEB",
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"url": "https://internetcomputer.org/docs/current/references/ic-interface-spec"
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}
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],
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"database_specific": {
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"cwe_ids": [
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"CWE-401"
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],
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"severity": "HIGH",
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"github_reviewed": true,
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"github_reviewed_at": "2024-09-05T16:44:27Z",
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"nvd_published_at": "2024-09-05T13:15:11Z"
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}
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}
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