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Category:   Application (Generic)  >   CVS Vendors:   GNU [multiple authors]
(Mandrake Issues Fix) CVS Input Validation Flaw May Let Remote Users Send Malformed Module Requests to Create Root Directories and Files
SecurityTracker Alert ID:  1008440
SecurityTracker URL:  http://securitytracker.com/id/1008440
CVE Reference:   CVE-2003-0977   (Links to External Site)
Updated:  Dec 11 2003
Original Entry Date:  Dec 10 2003
Impact:   Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 1.11.10
Description:   A vulnerability was reported in CVS. A remote user may be able to cause CVS to create files and directories in the root directory.

It is reported that a remote user can submit a specially crafted and malformed module request that may cause the CVS server to attempt to create directories and possibly files at the root of the filesystem where the CVS repository is located. The report indicates that the permissions of the underlying filesystem will usually prevent the creation of these "misplaced directories."

The vendor reports that there are no known exploits for this flaw.

Impact:   A remote user may be able to cause CVS to create directories and potentially files in the filesystem root directory.
Solution:   Mandrake has released a fix.

Mandrake Linux 9.1:
e16e571b0c94bb8c90b2e3f620975845 9.1/RPMS/cvs-1.11.10-0.2.91mdk.i586.rpm
23a8af158abeff53dee68134f1f74e9b 9.1/SRPMS/cvs-1.11.10-0.2.91mdk.src.rpm

Mandrake Linux 9.1/PPC:
fe0c799fdb5958ff751550217049e8c1 ppc/9.1/RPMS/cvs-1.11.10-0.2.91mdk.ppc.rpm
23a8af158abeff53dee68134f1f74e9b ppc/9.1/SRPMS/cvs-1.11.10-0.2.91mdk.src.rpm

Mandrake Linux 9.2:
40cb9ef455fa6691dd83c825cb9b7187 9.2/RPMS/cvs-1.11.10-0.2.92mdk.i586.rpm
462be325ab3b81b3d66d3b50667299e0 9.2/SRPMS/cvs-1.11.10-0.2.92mdk.src.rpm

Vendor URL:  ccvs.cvshome.org/servlets/NewsItemView?newsID=84&JServSessionIdservlets=8u3x1myav1 (Links to External Site)
Cause:   Input validation error
Underlying OS:  Linux (Mandriva/Mandrake)
Underlying OS Comments:  9.1, 9.2

Message History:   This archive entry is a follow-up to the message listed below.
Dec 9 2003 CVS Input Validation Flaw May Let Remote Users Send Malformed Module Requests to Create Root Directories and Files



 Source Message Contents

Subject:  MDKSA-2003:112-1 - Updated cvs packages fix malformed module request vulnerability


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

 _______________________________________________________________________

                Mandrake Linux Security Update Advisory
 _______________________________________________________________________

 Package name:           cvs
 Advisory ID:            MDKSA-2003:112-1
 Date:                   December 10th, 2003
 Original Advisory Date: December 8th, 2003
 Affected versions:	 9.1, 9.2
 ______________________________________________________________________

 Problem Description:

 A vulnerability was discovered in the CVS server < 1.11.10 where a
 malformed module request could cause the CVS server to attempt to
 create directories and possibly files at the root of the filesystem
 holding the CVS repository.
 
 Updated packages are available that fix the vulnerability by providing
 CVS 1.11.10 on all supported distributions.
  
Update:

 The previous updates had an incorrect temporary directory hard-coded
 in the cvs binary for 9.1 and 9.2.  This update corrects the problem.
 _______________________________________________________________________

 References:

  http://ccvs.cvshome.org/servlets/NewsItemView?newsID=84&JServSessionIdservlets=8u3x1myav1
 ______________________________________________________________________

 Updated Packages:
  
 Mandrake Linux 9.1:
 e16e571b0c94bb8c90b2e3f620975845  9.1/RPMS/cvs-1.11.10-0.2.91mdk.i586.rpm
 23a8af158abeff53dee68134f1f74e9b  9.1/SRPMS/cvs-1.11.10-0.2.91mdk.src.rpm

 Mandrake Linux 9.1/PPC:
 fe0c799fdb5958ff751550217049e8c1  ppc/9.1/RPMS/cvs-1.11.10-0.2.91mdk.ppc.rpm
 23a8af158abeff53dee68134f1f74e9b  ppc/9.1/SRPMS/cvs-1.11.10-0.2.91mdk.src.rpm

 Mandrake Linux 9.2:
 40cb9ef455fa6691dd83c825cb9b7187  9.2/RPMS/cvs-1.11.10-0.2.92mdk.i586.rpm
 462be325ab3b81b3d66d3b50667299e0  9.2/SRPMS/cvs-1.11.10-0.2.92mdk.src.rpm
 _______________________________________________________________________

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

 A list of FTP mirrors can be obtained from:

  http://www.mandrakesecure.net/en/ftp.php

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

  gpg --recv-keys --keyserver www.mandrakesecure.net 0x22458A98

 Please be aware that sometimes it takes the mirrors a few hours to
 update.

 You can view other update advisories for Mandrake Linux at:

  http://www.mandrakesecure.net/en/advisories/

 MandrakeSoft has several security-related mailing list services that
 anyone can subscribe to.  Information on these lists can be obtained by
 visiting:

  http://www.mandrakesecure.net/en/mlist.php

 If you want to report vulnerabilities, please contact

  security_linux-mandrake.com

 Type Bits/KeyID     Date       User ID
 pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team
  <security linux-mandrake.com>
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