CVE-2024-11991

5.6 MEDIUM
Published: December 09, 2024 Modified: December 08, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://github.com/dfinity/motoko/pull/4677
Source: 6b35d637-e00f-4228-858c-b20ad6e1d07b
Issue Tracking Patch
https://github.com/dfinity/motoko/security/advisories/GHSA-9rhg-3qf8-hrv3
Source: 6b35d637-e00f-4228-858c-b20ad6e1d07b
Vendor Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.6 / 10.0
EPSS (Exploit Probability)
0.1%
19th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

dfinity