Sicherheit: Zwei Probleme in botan

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From: Aaron Bauman <bman@gentoo.org>
To: gentoo-announce@lists.gentoo.org
Message-ID: <0d9f3613-48a8-d947-be39-afc9da9eacf8@gentoo.org>
Subject: [ GLSA 201701-23 ] Botan: Multiple vulnerabilities

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Gentoo Linux Security Advisory GLSA 201701-23
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https://security.gentoo.org/
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Severity: Normal
Title: Botan: Multiple vulnerabilities
Date: January 11, 2017
Bugs: #581324
ID: 201701-23

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Synopsis
========

Multiple vulnerabilities have been found in Botan, the worst of which
might allow remote attackers to obtain ECDSA secret keys.

Background
==========

Botan (Japanese for peony) is a cryptography library written in C++11.

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

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/botan < 1.10.13 >= 1.10.13

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

Multiple vulnerabilities have been discovered in Botan. Please review
the CVE identifiers referenced below for details.

Impact
======

A remote attacker might obtain ECDSA secret keys via a timing
side-channel attack or could possibly bypass TLS policy.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Botan users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-libs/botan-1.10.13"

References
==========

[ 1 ] CVE-2016-2849
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2849
[ 2 ] CVE-2016-2850
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2016-2850

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

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

https://security.gentoo.org/glsa/201701-23

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 2017 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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<pre style=3D"color: rgb(0, 0, 0); font-style: normal;
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Gentoo Linux Security Advisory GLSA 201701-23
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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: Botan: Multiple vulnerabilities
Date: January 11, 2017
Bugs: #581324
ID: 201701-23

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

Multiple vulnerabilities have been found in Botan, the worst of which
might allow remote attackers to obtain ECDSA secret keys.

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

Botan (Japanese for peony) is a cryptography library written in C++11.

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/botan < 1.10.13 >=3D
1.1=
0.13=20

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

Multiple vulnerabilities have been discovered in Botan. Please review
the CVE identifiers referenced below for details.

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

A remote attacker might obtain ECDSA secret keys via a timing
side-channel attack or could possibly bypass TLS policy.

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 Botan users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=3Ddev-libs/botan-1.10.13"

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

[ 1 ] CVE-2016-2849
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2016-2849">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
16-2849</a>
[ 2 ] CVE-2016-2850
<a class=3D"moz-txt-link-freetext" href=3D"http://nvd.nist.gov/nvd.=
cfm?cvename=3DCVE-2016-2850">http://nvd.nist.gov/nvd.cfm?cvename=3DCVE-20=
16-2850</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/201701-23">https://security.gentoo.org/glsa/201701-23</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 2017 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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