[ GLSA 202007-50 ] GLib Networking: Improper certificate validation

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Gentoo Linux Security Advisory                           GLSA 202007-50
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                                           https://security.gentoo.org/
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 Severity: Normal
    Title: GLib Networking: Improper certificate validation
     Date: July 27, 2020
     Bugs: #725880
       ID: 202007-50

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Synopsis
========

GLib Networking was not properly verifying TLS certificates in all
circumstances, possibly allowing an integrity/confidentiality
compromise.

Background
==========

Network-related giomodules for glib

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

    -------------------------------------------------------------------
     Package              /     Vulnerable     /            Unaffected
    -------------------------------------------------------------------
  1  net-libs/glib-networking
                                  < 2.62.4                  >= 2.62.4

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

GTlsClientConnection skips hostname verification of the server's TLS
certificate if the application fails to specify the expected server
identity.

Impact
======

There may be a breach of integrity or confidentiality in connections
made using GLib Networking.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GLib Networking users should upgrade to the latest version:

  # emerge --sync
  # emerge --ask --oneshot -v ">=net-libs/glib-networking-2.62.4"

References
==========

[ 1 ] CVE-2020-13645
      https://nvd.nist.gov/vuln/detail/CVE-2020-13645

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

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

 https://security.gentoo.org/glsa/202007-50

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
[email protected] 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

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