Alta Aware — 881: protobuf-cpp denial of service vulnerability

Release Date

31st of May 2024.

Overview

A message parsing and memory management vulnerability in ProtocolBuffer’s C++ implementation can trigger an out of memory (OOM) failure when processing a specially crafted message, which could lead to a denial of service (DoS) on services using it.

This vulnerability only affects cameras with Unity firmware.

Affected Products

• Ava Cameras:
  • All Stable upgrade Channel versions before 6.8.6.
  • All Beta upgrade channel versions before 6.8.0.

Unaffected Products

• Ava Aware: all versions.

• Ava Cameras:

  • All Stable upgrade channel versions after and including 6.8.6.
  • All Beta upgrade channel versions after and including 6.8.0.

• Ava Cloud: all versions.

Resolution

This issue has been fixed in Ava Camera Beta upgrade channel version 6.8.0 and Stable upgrade channel version 6.8.6.

It is strongly recommended that all Ava Camera installations running an affected version upgrade to the latest release as soon as possible. Releases are available to download through the Ava Aware User Interface for Ava managed cameras and the Ava Camera User Interface for unmanaged Ava cameras.

Vulnerability Information

• CVE: CVE-2022-1941
• CVSSv3 score: 5.7 (Medium)
• CVSSv3 vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Mitigations

There are no known mitigations for this issue.

Work arounds

There are no known work arounds for this issue.

Acknowledgements

Issue reported by ClusterFuzz (maintained by Google).

Disclosure Timeline

• 22/09/2022 Issue found
• 20/12/2023 Root cause established
• 20/12/2023 Fix identified
• 04/04/2024 Patched Ava Cameras (Beta upgrade channel) released
• 07/05/2024 Patched Ava Cameras (Stable upgrade channel) released
• 31/05/2024 Vulnerability publicly disclosed