U radu programskog paketa tigervnc otkriven je sigurnosni nedostatak koji može dovesti do otkrivanja povjerljivih korisničkih podataka kao što su korisničko ime i lozinka.

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Fedora Update Notification
FEDORA-2011-6838
2011-05-11 05:44:58
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Name        : tigervnc
Product     : Fedora 15
Version     : 1.0.90
Release     : 4.fc15
URL         : http://www.tigervnc.com
Summary     : A TigerVNC remote display system
Description :
Virtual Network Computing (VNC) is a remote display system which
allows you to view a computing 'desktop' environment not only on the
machine where it is running, but from anywhere on the Internet and
from a wide variety of machine architectures.  This package contains a
client which will allow you to connect to other desktops running a VNC
server.

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Update Information:

This update fixes following issue:

* vncviewer could have sent user password to VNC server without proper
validation of the server's X.509 certificate when secure X.509 authentication
was requested (CVE-2011-1775)
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ChangeLog:

* Tue May 10 2011 Adam Tkac <atkac redhat com> - 1.0.90-4
- viewer can send password without proper validation of X.509 certs
  (CVE-2011-1775)
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References:

  [ 1 ] Bug #702672 - tigervnc: vncviewer can send password to server without
proper validation of the X.509 certificate [fedora-15]
        https://bugzilla.redhat.com/show_bug.cgi?id=702672
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This update can be installed with the "yum" update program.  Use 
su -c 'yum update tigervnc' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key.  More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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