Uninitialized Memory Access Bug Affects Motoko's Incremental Garbage Collector, Could Allow Unauthorized Access to Canister's Memory
CVE-2024-11991

5.6MEDIUM

Key Information:

Vendor
Internet Computer
Status
Motoko
Vendor
CVE Published:
9 December 2024

Summary

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 Version(s)

Motoko 0.9.0 <= 0.13.3

References

https://github.com/dfinity/motoko/pull/4677
https://github.com/dfinity/motoko/security/advisories/GHS...

CVSS V3.1

Score:
5.6
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.