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 _______________________________________________________________________

 Mandriva Linux Security Advisory                         MDVSA-2015:146
 http://www.mandriva.com/en/support/security/
 _______________________________________________________________________

 Package : libvncserver
 Date    : March 29, 2015
 Affected: Business Server 2.0
 _______________________________________________________________________

 Problem Description:

 Updated libvncserver packages fix security vulnerabilities:
 
 An integer overflow in liblzo before 2.07 allows attackers to cause
 a denial of service or possibly code execution in applications using
 performing LZO decompression on a compressed payload from the attacker
 (CVE-2014-4607).
 
 The libvncserver library is built with a bundled copy of minilzo,
 which is a part of liblzo containing the vulnerable code.
 
 A malicious VNC server can trigger incorrect memory management handling
 by advertising a large screen size parameter to the VNC client. This
 would result in multiple memory corruptions and could allow remote
 code execution on the VNC client (CVE-2014-6051, CVE-2014-6052).
 
 A malicious VNC client can trigger multiple DoS conditions on the VNC
 server by advertising a large screen size, ClientCutText message length
 and/or a zero scaling factor parameter (CVE-2014-6053, CVE-2014-6054).
 
 A malicious VNC client can trigger multiple stack-based buffer
 overflows by passing a long file and directory names and/or
 attributes (FileTime) when using the file transfer message feature
 (CVE-2014-6055).
 _______________________________________________________________________

 References:

 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4607
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6051
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6052
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6053
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6054
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6055
 http://advisories.mageia.org/MGASA-2014-0356.html
 http://advisories.mageia.org/MGASA-2014-0397.html
 _______________________________________________________________________

 Updated Packages:

 Mandriva Business Server 2/X86_64:
 03972a91ec4c545d7adb31a70052b1da 
 mbs2/x86_64/lib64vncserver0-0.9.9-4.1.mbs2.x86_64.rpm
 1fa18e6e4fab02a75801ce5e1807ac48 
 mbs2/x86_64/lib64vncserver-devel-0.9.9-4.1.mbs2.x86_64.rpm
 5a483661e96bc38566760b28f5c3a8f1 
 mbs2/x86_64/linuxvnc-0.9.9-4.1.mbs2.x86_64.rpm 
 e65eba74f16605cbe40b899ef3ff62af 
 mbs2/SRPMS/libvncserver-0.9.9-4.1.mbs2.src.rpm
 _______________________________________________________________________

 To upgrade automatically use MandrivaUpdate or urpmi.  The verification
 of md5 checksums and GPG signatures is performed automatically for you.

 All packages are signed by Mandriva for security.  You can obtain the
 GPG public key of the Mandriva Security Team by executing:

  gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

 You can view other update advisories for Mandriva Linux at:

  http://www.mandriva.com/en/support/security/advisories/

 If you want to report vulnerabilities, please contact

  security_(at)_mandriva.com
 _______________________________________________________________________

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Mandriva Security Team
  <security*mandriva.com>
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