Exploit/Advisories

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Gentoo Linux Security Advisory GLSA 202211-01
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https://security.gentoo.org/
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Severity: Normal
Title: OpenSSL: Multiple Vulnerabilities
Date: November 01, 2022
Bugs: #878269
ID: 202211-01

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Synopsis
========

Multiple vulnerabilities have been discovered in OpenSSL, the worst of
which could result in remote code execution.

Background
==========

OpenSSL is an Open Source toolkit implementing the Secure Sockets Layer
(SSL v2/v3) and Transport Layer Security (TLS v1) as well as a general
purpose cryptography library.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/openssl < 3.0.7:0/3 >= 3.0.7:0/3

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

Multiple buffer overflows exist in OpenSSL's handling of TLS
certificates for client authentication.

Impact
======

It is believed that, while unlikely, code execution is possible in
certain system configurations.

Workaround
==========

Users operating TLS servers may consider disabling TLS client
authentication, if it is being used, until fixes are applied.

Resolution
==========

All OpenSSL 3 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/openssl-3.0.7"

References
==========

[ 1 ] CVE-2022-3602
https://nvd.nist.gov/vuln/detail/CVE-2022-3602
[ 2 ] CVE-2022-3786
https://nvd.nist.gov/vuln/detail/CVE-2022-3786

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

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

https://security.gentoo.org/glsa/202211-01

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 2022 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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