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Gentoo Linux Security Advisory                           GLSA 202007-49
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                                           https://security.gentoo.org/
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 Severity: Low
    Title: Mozilla Network Security Service (NSS): Information
           disclosure
     Date: July 27, 2020
     Bugs: #726842
       ID: 202007-49

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Synopsis
=======
NSS has an information disclosure vulnerability when handling DSA keys.

Background
=========
The Mozilla Network Security Service (NSS) is a library implementing
security features like SSL v.2/v.3, TLS, PKCS #5, PKCS #7, PKCS #11,
PKCS #12, S/MIME and X.509 certificates.

Affected packages
================
    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  dev-libs/nss                 < 3.52.1                  >= 3.52.1

Description
==========
NSS was found to not always perform constant-time operations when
working with DSA key material.

Impact
=====
An attacker may be able to obtain information about a DSA private key.

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

Resolution
=========
All NSS users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=dev-libs/nss-3.52.1"

References
=========
[ 1 ] CVE-2020-12399
      https://nvd.nist.gov/vuln/detail/CVE-2020-12399

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

 https://security.gentoo.org/glsa/202007-49

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 2020 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/