Date: Wed, 04 Apr 2007 17:29:54 -0600
From: security@...driva.com
To: full-disclosure@...ts.grok.org.uk
Subject: [ MDKSA-2007:080 ] - Updated tightvnc packages
	fix integer overflow vulnerabilities


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 _______________________________________________________________________
 
 Mandriva Linux Security Advisory                         MDKSA-2007:080
 http://www.mandriva.com/security/
 _______________________________________________________________________
 
 Package : tightvnc
 Date    : April 4, 2007
 Affected: 2007.0, Corporate 3.0, Corporate 4.0
 _______________________________________________________________________
 
 Problem Description:
 
 Local exploitation of a memory corruption vulnerability in the X.Org
 and XFree86 X server could allow an attacker to execute arbitrary code
 with privileges of the X server, typically root.
 
 The vulnerability exists in the ProcXCMiscGetXIDList() function in the
 XC-MISC extension. This request is used to determine what resource IDs
 are available for use. This function contains two vulnerabilities,
 both result in memory corruption of either the stack or heap. The
 ALLOCATE_LOCAL() macro used by this function allocates memory on the
 stack using alloca() on systems where alloca() is present, or using
 the heap otherwise. The handler function takes a user provided value,
 multiplies it, and then passes it to the above macro. This results in
 both an integer overflow vulnerability, and an alloca() stack pointer
 shifting vulnerability. Both can be exploited to execute arbitrary
 code. (CVE-2007-1003)
 
 iDefense reported two integer overflows in the way X.org handled
 various font files. A malicious local user could exploit these issues
 to potentially execute arbitrary code with the privileges of the X.org
 server. (CVE-2007-1351, CVE-2007-1352)
 
 TightVNC uses some of the same code base as Xorg, and has the same
 vulnerable code.
 
 Updated packages are patched to address these issues.
 _______________________________________________________________________

 References:
 
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1003
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1351
 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-1352
 _______________________________________________________________________
 
 Updated Packages:
 
 Mandriva Linux 2007.0:
 68955a65584a1c964141aa1d0e44f7e0  2007.0/i586/tightvnc-1.2.9-13.2mdv2007.0.i586.rpm
 9928944d22067747b5427a15ab59c853  2007.0/i586/tightvnc-doc-1.2.9-13.2mdv2007.0.i586.rpm
 9a6643c4c00c3d758a204e1b46969914  2007.0/i586/tightvnc-server-1.2.9-13.2mdv2007.0.i586.rpm 
 0a4abe1c964ed13e3d445efc0c1dd244  2007.0/SRPMS/tightvnc-1.2.9-13.2mdv2007.0.src.rpm

 Mandriva Linux 2007.0/X86_64:
 700ed069013c7cfef989263344e41dd0  2007.0/x86_64/tightvnc-1.2.9-13.2mdv2007.0.x86_64.rpm
 8a8c9a1721c9521d2224da5b73ddaf76  2007.0/x86_64/tightvnc-doc-1.2.9-13.2mdv2007.0.x86_64.rpm
 7a6402ace347731a1ae8722d80a75638  2007.0/x86_64/tightvnc-server-1.2.9-13.2mdv2007.0.x86_64.rpm 
 0a4abe1c964ed13e3d445efc0c1dd244  2007.0/SRPMS/tightvnc-1.2.9-13.2mdv2007.0.src.rpm

 Corporate 3.0:
 65109fe6bab801e11e503b60b308643b  corporate/3.0/i586/tightvnc-1.2.9-2.2.C30mdk.i586.rpm
 3b08614f635cd9cf8b68d7c76d30b345  corporate/3.0/i586/tightvnc-doc-1.2.9-2.2.C30mdk.i586.rpm
 0e61567902f05149ac4f08e64953febf  corporate/3.0/i586/tightvnc-server-1.2.9-2.2.C30mdk.i586.rpm 
 e019fb72dce33e1dbf2e6f7a3bdcb384  corporate/3.0/SRPMS/tightvnc-1.2.9-2.2.C30mdk.src.rpm

 Corporate 3.0/X86_64:
 ef2e7129cf59e0dbdbf783ebbefb7e43  corporate/3.0/x86_64/tightvnc-1.2.9-2.2.C30mdk.x86_64.rpm
 cdd378ae7999c118a7dfafd0c67cc674  corporate/3.0/x86_64/tightvnc-doc-1.2.9-2.2.C30mdk.x86_64.rpm
 e30948128bc10c8aacc06694d986b1fa  corporate/3.0/x86_64/tightvnc-server-1.2.9-2.2.C30mdk.x86_64.rpm 
 e019fb72dce33e1dbf2e6f7a3bdcb384  corporate/3.0/SRPMS/tightvnc-1.2.9-2.2.C30mdk.src.rpm

 Corporate 4.0:
 173bc482a466816a6b0c5a8b5568b8ef  corporate/4.0/i586/tightvnc-1.2.9-6.2.20060mlcs4.i586.rpm
 5b274d7ac4cd7758411ddbafc885209e  corporate/4.0/i586/tightvnc-doc-1.2.9-6.2.20060mlcs4.i586.rpm
 41fe3f9509d09eaa69f915afb348fee0  corporate/4.0/i586/tightvnc-server-1.2.9-6.2.20060mlcs4.i586.rpm 
 2651d5941592eba01e6acf47382d9cae  corporate/4.0/SRPMS/tightvnc-1.2.9-6.2.20060mlcs4.src.rpm

 Corporate 4.0/X86_64:
 e1aef1895d0bbbc24690e778ec848d74  corporate/4.0/x86_64/tightvnc-1.2.9-6.2.20060mlcs4.x86_64.rpm
 54537c7aa36eff300a96daac296af9ed  corporate/4.0/x86_64/tightvnc-doc-1.2.9-6.2.20060mlcs4.x86_64.rpm
 342dc521a4cf33fdf775f0c13191a552  corporate/4.0/x86_64/tightvnc-server-1.2.9-6.2.20060mlcs4.x86_64.rpm 
 2651d5941592eba01e6acf47382d9cae  corporate/4.0/SRPMS/tightvnc-1.2.9-6.2.20060mlcs4.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/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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