CVE-2022-1941

Published: 22 September 2022

A parsing vulnerability for the MessageSet type in the ProtocolBuffers versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 3.21.5 for protobuf-cpp, and versions prior to and including 3.16.1, 3.17.3, 3.18.2, 3.19.4, 3.20.1 and 4.21.5 for protobuf-python can lead to out of memory failures. A specially crafted message with multiple key-value per elements creates parsing issues, and can lead to a Denial of Service against services receiving unsanitized input. We recommend upgrading to versions 3.18.3, 3.19.5, 3.20.2, 3.21.6 for protobuf-cpp and 3.18.3, 3.19.5, 3.20.2, 4.21.6 for protobuf-python. Versions for 3.16 and 3.17 are no longer updated.

Priority

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package	Release	Status
protobuf Launchpad, Ubuntu, Debian	bionic	Released (3.0.0-9.1ubuntu1.1)
	focal	Released (3.6.1.3-2ubuntu5.2)
	jammy	Released (3.12.4-1ubuntu7.22.04.1)
	kinetic	Released (3.12.4-1ubuntu7.22.10.1)
	lunar	Not vulnerable (3.21.12-1ubuntu6)
	trusty	Ignored (changes too intrusive)
	upstream	Needs triage
	xenial	Released (2.6.1-1.3ubuntu0.1~esm2) Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
	Patches: upstream: https://github.com/protocolbuffers/protobuf/commit/b4c395aaedfacb32e2414d361fa85968c0991b34

Severity score breakdown

Parameter	Value
Base score	7.5
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	None
Scope	Unchanged
Confidentiality	None
Integrity impact	None
Availability impact	High
Vector	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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