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Sicherheit: Mangelnde Rechteprüfung in libuv
Aktuelle Meldungen Distributionen
Name: Mangelnde Rechteprüfung in libuv
ID: 201611-10
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: Do, 17. November 2016, 12:04
Referenzen: http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-0278

Originalnachricht

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <1f3c22ce-f32c-ae2d-3839-e665362ed6fd@gentoo.org>
Subject: [ GLSA 201611-10 ] libuv: Privilege escalation

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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201611-10
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https://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: libuv: Privilege escalation
Date: November 17, 2016
Bugs: #540826
ID: 201611-10

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

Synopsis
========

A vulnerability in libuv could lead to privilege escalation.

Background
==========

libuv is a multi-platform support library with a focus on asynchronous
I/O.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libuv < 1.4.2 >= 1.4.2

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

It was discovered that libuv does not call setgroups before calling
setuid/setgid. If this is not called, then even though the uid has
been dropped, there may still be groups associated that permit
superuser privileges.

Impact
======

Context-dependent attackers could escalate privileges via unspecified
vectors.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All libuv users should upgrade to the latest version:

# emerge --sync
# emerge --ask --verbose --oneshot ">=dev-libs/libuv-1.4.2"

References
==========

[ 1 ] CVE-2015-0278
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2015-0278

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

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

https://security.gentoo.org/glsa/201611-10

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 2016 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.

http://creativecommons.org/licenses/by-sa/2.5


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Gentoo Linux Security Advisory GLSA 201611-10
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<a
class=3D"moz-txt-link-freet=
ext" href=3D"https://security.gentoo.org/">https://security.gentoo.org/</=
a>
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Severity: Normal
Title: libuv: Privilege escalation
Date: November 17, 2016
Bugs: #540826
ID: 201611-10

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

Synopsis
=3D=3D=3D=3D=3D=3D=3D=3D

A vulnerability in libuv could lead to privilege escalation.

Background
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

libuv is a multi-platform support library with a focus on asynchronous
I/O.

Affected packages
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/libuv &lt; 1.4.2 &gt;=3D
1=
=2E4.2=20

Description
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

It was discovered that libuv does not call setgroups before calling
setuid/setgid. If this is not called, then even though the uid has
been dropped, there may still be groups associated that permit
superuser privileges.

Impact
=3D=3D=3D=3D=3D=3D

Context-dependent attackers could escalate privileges via unspecified
vectors.

Workaround
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

There is no known workaround at this time.

Resolution
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

All libuv users should upgrade to the latest version:

# emerge --sync
# emerge --ask --verbose --oneshot "&gt;=3Ddev-libs/libuv-1.4.2"

References
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

[ 1 ] CVE-2015-0278
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2015-0278">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
15-0278</a>

Availability
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

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

<a class=3D"moz-txt-link-freetext" href=3D"https://security.gentoo.org/g=
lsa/201611-10">https://security.gentoo.org/glsa/201611-10</a>

Concerns?
=3D=3D=3D=3D=3D=3D=3D=3D=3D

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 class=3D"moz-txt-link-abbreviated"
href=3D"mailto:security@gentoo.org"=
>security@gentoo.org</a> or alternatively, you may file a bug at
<a class=3D"moz-txt-link-freetext" href=3D"https://bugs.gentoo.org">https=
://bugs.gentoo.org</a>.

License
=3D=3D=3D=3D=3D=3D=3D

Copyright 2016 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 class=3D"moz-txt-link-freetext" href=3D"http://creativecommons.org/lic=
enses/by-sa/2.5">http://creativecommons.org/licenses/by-sa/2.5</a></pre>
</body>
</html>

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