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Gentoo Linux Security Advisory GLSA 202408-31
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https://security.gentoo.org/
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Severity: Normal
Title: protobuf, protobuf-python: Denial of Service
Date: August 12, 2024
Bugs: #872434
ID: 202408-31

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Synopsis
========

A vulnerability has been discovered in protobuf and protobuf-python,
which can lead to a denial of service.

Background
==========

Google's Protocol Buffers are an extensible mechanism for serializing structured data.

Affected packages
=================

Package Vulnerable Unaffected
-------------------------- ------------ ------------
dev-libs/protobuf < 3.20.3 >= 3.20.3
dev-python/protobuf-python < 3.19.6 >= 3.19.6

Description
===========

A vulnerability has been discovered in protobuf and protobuf-python.
Please review the CVE identifiers referenced below for details.

Impact
======

A parsing vulnerability for the MessageSet type 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.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All protobuf and protobuf-python users should upgrade to the latest
version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/protobuf-3.20.3"
# emerge --ask --oneshot --verbose ">=dev-python/protobuf-python-3.19.6"

References
==========

[ 1 ] CVE-2022-1941
https://nvd.nist.gov/vuln/detail/CVE-2022-1941

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202408-31

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

License
=======

Copyright 2024 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5
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