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Mandrake: CVS double free vulnerability Print E-mail
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Posted by Team   
Mandrake On servers which are configured to allow anonymous read-only access, this bug could be used by anonymous users to gain write privileges.


                Mandrake Linux Security Update Advisory

Package name:           cvs
Advisory ID:            MDKSA-2003:009
Date:                   January 20th, 2003

Affected versions:      7.2, 8.0, 8.1, 8.2, 9.0,
                        Single Network Firewall 7.2

Problem Description:

 Two vulnerabilities were discoverd by Stefen Esser in the cvs program.
 The first is an exploitable double free() bug within the server, which
 can be used to execute arbitray code on the CVS server.  To accomplish
 this, the attacker must have an anonymous read-only login to the CVS
 server.  The second vulnerability is with the Checkin-prog and
 Update-prog commands.  If a client has write permission, he can use
 these commands to execute programs outside of the scope of CVS, the
 output of which will be sent as output to the client.
 This update fixes the double free() vulnerability and removes the
 Checkin-prog and Update-prog commands from CVS.


Updated Packages:
 Linux-Mandrake 7.2:
 00c5fa0ceb118e8945e19fc232dfbedc  7.2/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  7.2/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.0:
 bfcbd6affe1d5e3d6c67f3aedca5b03b  8.0/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  8.0/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.0/PPC:
 7e11ceed860517f48e8bd574f852f05f  ppc/8.0/RPMS/cvs-1.11.4-2.2mdk.ppc.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  ppc/8.0/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.1:
 241c53a0b942290653ae85c3b577777c  8.1/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  8.1/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.1/IA64:
 85da2f450c0e1f5d6cb68f6930ffdb04  ia64/8.1/RPMS/cvs-1.11.4-2.2mdk.ia64.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  ia64/8.1/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.2:
 e9f65908d466277ccff091613dc9884d  8.2/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  8.2/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 8.2/PPC:
 a3c6bd3cf63d1595303f6084c02132ec  ppc/8.2/RPMS/cvs-1.11.4-2.2mdk.ppc.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  ppc/8.2/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Mandrake Linux 9.0:
 1099ed2410db9d689c1001ce2c8faf64  9.0/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  9.0/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

 Single Network Firewall 7.2:
 00c5fa0ceb118e8945e19fc232dfbedc  snf7.2/RPMS/cvs-1.11.4-2.2mdk.i586.rpm
 3555ee8fcbb21c5c7954c3cc0fe9cf4d  snf7.2/SRPMS/cvs-1.11.4-2.2mdk.src.rpm

Bug IDs fixed (see for more information):

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

If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm".  A list of
FTP mirrors can be obtained from:

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:

  rpm --checksig 

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

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

You can view other update advisories for Mandrake Linux at:

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

If you want to report vulnerabilities, please contact

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team

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