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Sicherheit: Mehrere Probleme in The GNU Privacy Guard
Aktuelle Meldungen Distributionen
Name: Mehrere Probleme in The GNU Privacy Guard
ID: USN-2982-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 15.10, Ubuntu 16.04 LTS
Datum: Di, 17. Mai 2016, 22:57
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4353
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4356
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4354
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4579
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4574
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4355

Originalnachricht

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==========================================================================
Ubuntu Security Notice USN-2982-1
May 17, 2016

libksba vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 16.04 LTS
- Ubuntu 15.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Libksba could be made to crash or run programs if it decoded specially
crafted data.

Software Description:
- libksba: X.509 and CMS support library

Details:

Hanno Böck discovered that Libksba incorrectly handled decoding certain BER
data. An attacker could use this issue to cause Libksba to crash, resulting
in a denial of service. This issue only applied to Ubuntu 12.04 LTS and
Ubuntu 14.04 LTS. (CVE-2016-4353)

Hanno Böck discovered that Libksba incorrectly handled decoding certain BER
data. An attacker could use this issue to cause Libksba to crash, resulting
in a denial of service, or possibly execute arbitrary code. This issue only
applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2016-4354,
CVE-2016-4355)

Hanno Böck discovered that Libksba incorrectly handled incorrect utf-8
strings when decoding certain DN data. An attacker could use this issue to
cause Libksba to crash, resulting in a denial of service, or possibly
execute arbitrary code. This issue only applied to Ubuntu 12.04 LTS and
Ubuntu 14.04 LTS. (CVE-2016-4356)

Pascal Cuoq discovered that Libksba incorrectly handled incorrect utf-8
strings when decoding certain DN data. An attacker could use this issue to
cause Libksba to crash, resulting in a denial of service, or possibly
execute arbitrary code. (CVE-2016-4574)

Pascal Cuoq discovered that Libksba incorrectly handled decoding certain
data. An attacker could use this issue to cause Libksba to crash, resulting
in a denial of service. (CVE-2016-4579)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 16.04 LTS:
libksba8 1.3.3-1ubuntu0.16.04.1

Ubuntu 15.10:
libksba8 1.3.3-1ubuntu0.15.10.1

Ubuntu 14.04 LTS:
libksba8 1.3.0-3ubuntu0.14.04.2

Ubuntu 12.04 LTS:
libksba8 1.2.0-2ubuntu0.2

In general, a standard system update will make all the necessary changes.

References:
http://www.ubuntu.com/usn/usn-2982-1
CVE-2016-4353, CVE-2016-4354, CVE-2016-4355, CVE-2016-4356,
CVE-2016-4574, CVE-2016-4579

Package Information:
https://launchpad.net/ubuntu/+source/libksba/1.3.3-1ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/libksba/1.3.3-1ubuntu0.15.10.1
https://launchpad.net/ubuntu/+source/libksba/1.3.0-3ubuntu0.14.04.2
https://launchpad.net/ubuntu/+source/libksba/1.2.0-2ubuntu0.2



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