Sicherheit: Ausführen von Code mit höheren Privilegien in libvirt

Lesezeichen hinzufügen

--Apple-Mail=_F6D3052B-6547-490D-9B76-B046477ADF7C
Content-Type: multipart/alternative;
boundary="Apple-Mail=_C570696B-5A6D-4930-95E9-36C066E8208D"

--Apple-Mail=_C570696B-5A6D-4930-95E9-36C066E8208D
Content-Transfer-Encoding: 7bit
Content-Type: text/plain;
charset=us-ascii

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202101-22
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: High
Title: libvirt: Unintended access to /dev/mapper/control
Date: January 26, 2021
Bugs: #739948
ID: 202101-22

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability in libvirt may allow root privilege escalation.

Background
==========

libvirt is a C toolkit for manipulating virtual machines.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/libvirt < 6.7.0 >= 6.7.0

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

A file descriptor for /dev/mapper/control was insufficiently protected.

Impact
======

A local attacker may be able to escalate to root privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libvirt users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=app-emulation/libvirt-6.7.0"

References
==========

[ 1 ] CVE-2020-14339
https://nvd.nist.gov/vuln/detail/CVE-2020-14339

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

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

https://security.gentoo.org/glsa/202101-22

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

--Apple-Mail=_C570696B-5A6D-4930-95E9-36C066E8208D
Content-Transfer-Encoding: 7bit
Content-Type: text/html;
charset=us-ascii

<html><head><meta http-equiv="Content-Type"
content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><pre style="word-wrap: break-word; white-space: pre-wrap;" class="">- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 202101-22
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
<a href="https://security.gentoo.org/" class="">https://security.gentoo.org/</a>
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: High
Title: libvirt: Unintended access to /dev/mapper/control
Date: January 26, 2021
Bugs: #739948
ID: 202101-22

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A vulnerability in libvirt may allow root privilege escalation.

Background
==========

libvirt is a C toolkit for manipulating virtual machines.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 app-emulation/libvirt < 6.7.0 >=
6.7.0

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

A file descriptor for /dev/mapper/control was insufficiently protected.

Impact
======

A local attacker may be able to escalate to root privileges.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libvirt users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=app-emulation/libvirt-6.7.0"

References
==========

[ 1 ] CVE-2020-14339
<a href="https://nvd.nist.gov/vuln/detail/CVE-2020-14339" class="">https://nvd.nist.gov/vuln/detail/CVE-2020-14339</a>

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

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

<a href="https://security.gentoo.org/glsa/202101-22" class="">https://security.gentoo.org/glsa/202101-22</a>

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
<a href="mailto:security@gentoo.org"
class="">security@gentoo.org</a> or alternatively, you may file a bug at
<a href="https://bugs.gentoo.org" class="">https://bugs.gentoo.org</a>.

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.

<a href="https://creativecommons.org/licenses/by-sa/2.5" class="">https://creativecommons.org/licenses/by-sa/2.5</a></pre><div class=""><br class=""></div></body></html>
--Apple-Mail=_C570696B-5A6D-4930-95E9-36C066E8208D--

--Apple-Mail=_F6D3052B-6547-490D-9B76-B046477ADF7C
Content-Transfer-Encoding: 7bit
Content-Disposition: attachment;
filename=signature.asc
Content-Type: application/pgp-signature;
name=signature.asc
Content-Description: Message signed with OpenPGP

-----BEGIN PGP SIGNATURE-----

iNUEARYKAH0WIQSONjK3ErBA5VvN3hCxfj6E5hA8mwUCYA9eB18UgAAAAAAuAChp
c3N1ZXItZnByQG5vdGF0aW9ucy5vcGVucGdwLmZpZnRoaG9yc2VtYW4ubmV0OEUz
NjMyQjcxMkIwNDBFNTVCQ0RERTEwQjE3RTNFODRFNjEwM0M5QgAKCRCxfj6E5hA8
mzEkAP4uAzHQUVpgGFfdsMghQXQhOtFHHng9jvxx02tCDjLp1AEA4lvBxMGnlec9
yPnw4sCmY8vvEEDqgRom8cnL6Jwv9Q8=
=vzaO
-----END PGP SIGNATURE-----

--Apple-Mail=_F6D3052B-6547-490D-9B76-B046477ADF7C--