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Sicherheit: Zwei Probleme in LibVNCServer
Aktuelle Meldungen Distributionen
Name: Zwei Probleme in LibVNCServer
ID: USN-3171-1
Distribution: Ubuntu
Plattformen: Ubuntu 12.04 LTS, Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 16.10
Datum: Mi, 11. Januar 2017, 23:47
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9941
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9942

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From: Marc Deslauriers <marc.deslauriers@canonical.com>
Reply-To: Ubuntu Security <security@ubuntu.com>
To: ubuntu-security-announce@lists.ubuntu.com
Message-ID: <5b4ed68f-4930-9a2d-4583-550949cea89f@canonical.com>
Subject: [USN-3171-1] LibVNCServer vulnerabilities

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==========================================================================
Ubuntu Security Notice USN-3171-1
January 11, 2017

libvncserver vulnerabilities
==========================================================================

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

- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Several security issues were fixed in LibVNCServer.

Software Description:
- libvncserver: vnc server library

Details:

Josef Gajdusek discovered that the LibVNCServer client library incorrectly
handled certain FrameBufferUpdate messages. If a user were tricked into
connecting to a malicious server, an attacker could use this issue to cause
a denial of service, or possibly execute arbitrary code. (CVE-2016-9941,
CVE-2016-9942)

Update instructions:

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

Ubuntu 16.10:
libvncclient1 0.9.10+dfsg-3ubuntu0.16.10.1
libvncserver1 0.9.10+dfsg-3ubuntu0.16.10.1

Ubuntu 16.04 LTS:
libvncclient1 0.9.10+dfsg-3ubuntu0.16.04.1
libvncserver1 0.9.10+dfsg-3ubuntu0.16.04.1

Ubuntu 14.04 LTS:
libvncserver0 0.9.9+dfsg-1ubuntu1.2

Ubuntu 12.04 LTS:
libvncserver0 0.9.8.2-2ubuntu1.2

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

References:
http://www.ubuntu.com/usn/usn-3171-1
CVE-2016-9941, CVE-2016-9942

Package Information:
https://launchpad.net/ubuntu/+source/libvncserver/0.9.10+dfsg-3ubuntu0.16.10.1
https://launchpad.net/ubuntu/+source/libvncserver/0.9.10+dfsg-3ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/libvncserver/0.9.9+dfsg-1ubuntu1.2
https://launchpad.net/ubuntu/+source/libvncserver/0.9.8.2-2ubuntu1.2



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