A TCG TPM2 Software Stack security update has been released for Gentoo Linux.

GLSA 202107-10 : TCG TPM2 Software Stack: Information disclosure

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Gentoo Linux Security Advisory GLSA 202107-10
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  https://security.gentoo.org/
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Severity: Normal
Title: TCG TPM2 Software Stack: Information disclosure
Date: July 07, 2021
Bugs: #746563
ID: 202107-10

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Synopsis
=======
A bug in TCG TPM2 Software Stack may result in information disclosure
to a local attacker.

Background
=========
TCG TPM2 Software Stack is a library to interface with trusted platform
modules.

Affected packages
================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-crypt/tpm2-tss < 2.4.3 >= 2.4.3

Description
==========
TCG TPM2 Software Stack did not appropriately apply FAPI policies to
protect data encrypted with the trusted platform module.

Impact
=====
Data encrypted using TCG TPM2 Software Stack (tpm2-tss) may not be
protected from an attacker.

Workaround
=========
There is no known workaround at this time.

Resolution
=========
All tpm2-tss users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-crypt/tpm2-tss-2.4.3"

References
=========
[ 1 ] CVE-2020-24455
  https://nvd.nist.gov/vuln/detail/CVE-2020-24455

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

  https://security.gentoo.org/glsa/202107-10

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 2021 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