CVE-2024-7884: Ic cdk :call` Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-rwq6-crjg-9cpw",
  "modified" : "2024-09-09T14:05:39Z",
  "published" : "2024-09-05T16:44:27Z",
  "aliases" : [ "CVE-2024-7884" ],
  "summary" : "ic-cdk has a memory leak when calling a canister method via `ic_cdk::call`",
  "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### References\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)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  }, {
    "type" : "CVSS_V4",
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.8.0"
      }, {
        "fixed" : "0.8.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.9.0"
      }, {
        "fixed" : "0.9.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.10.0"
      }, {
        "fixed" : "0.10.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.11.0"
      }, {
        "fixed" : "0.11.6"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "< 0.11.5"
    }
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.12.0"
      }, {
        "fixed" : "0.12.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.13.0"
      }, {
        "fixed" : "0.13.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "< 0.13.4"
    }
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.14.0"
      }, {
        "fixed" : "0.14.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "ic_cdk"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.15.0"
      }, {
        "fixed" : "0.15.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/dfinity/cdk-rs/security/advisories/GHSA-rwq6-crjg-9cpw"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-7884"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dfinity/cdk-rs/pull/509"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/dfinity/cdk-rs/commit/bd17d57a7b8ca59665fea5fad6143ca02724d03b"
  }, {
    "type" : "WEB",
    "url" : "https://docs.rs/ic-cdk/latest/ic_cdk"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/dfinity/cdk-rs"
  }, {
    "type" : "WEB",
    "url" : "https://internetcomputer.org/docs/current/references/ic-interface-spec"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2024-0372.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-401" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-09-05T16:44:27Z",
    "nvd_published_at" : "2024-09-05T13:15:11Z"
  }
}