Vulnerability · Published Dec 9, 2024 · Assigned by Dfinity
CVE-2024-11991Uninitialized memory access in Motoko incremental garbage collector
Medium 5.6
In plain English
A medium-severity security flaw in Motoko from Internet Computer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 16% of all known vulnerabilities).
Official description
Motoko's incremental garbage collector is impacted by an uninitialized memory access bug, caused by incorrect use of write barriers in a few locations. This vulnerability could potentially allow unauthorized read or write access to a Canister's memory. However, exploiting this bug requires the Canister to enable the incremental garbage collector or enhanced orthogonal persistence, which are non-default features in Motoko.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Internet Computer | Motoko | 0.9.0 – through 0.13.3 |
Weakness: CWE-908 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L