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Mandrake Linux Advisory: kdebase

Sep 17, 2003, 12:54 (0 Talkback[s])

Mandrake Linux Security Update Advisory

Package name: kdebase
Advisory ID: MDKSA-2003:091
Date: September 16th, 2003
Affected versions: 9.0, 9.1, Corporate Server 2.1

Problem Description:

A vulnerability was discovered in all versions of KDE 2.2.0 up to and including 3.1.3. KDM does not check for successful completion of the pam_setcred() call and in the case of error conditions in the installed PAM modules, KDM may grant local root access to any user with valid login credentials. It has been reported to the KDE team that a certain configuration of the MIT pam_krb5 module can result in a failing pam_setcred() call which leaves the session alive and would provide root access to any regular user. It is also possible that this vulnerability can likewise be exploited with other PAM modules in a similar manner.

Another vulnerability was discovered in kdm where the cookie session generating algorithm was considered too weak to supply a full 128 bits of entropy. This allowed unauthorized users to brute-force the session cookie.

mdkkdm, a specialized version of kdm, is likewise vulnerable to these problems and has been patched as well.


Updated Packages:

Corporate Server 2.1:
b16612d8f4e68781cecaf9d32e12c50c corporate/2.1/RPMS/kdebase-3.0.5a-1.4mdk.i586.rpm
a80f6c8029c536d59f92fcf7bcf1abd5 corporate/2.1/RPMS/kdebase-devel-3.0.5a-1.4mdk.i586.rpm
ae02c014e1994c25a1ee23a7eee8095c corporate/2.1/RPMS/kdebase-nsplugins-3.0.5a-1.4mdk.i586.rpm
f9ebdbc69440ca1d11fcd5653f8173d6 corporate/2.1/SRPMS/kdebase-3.0.5a-1.4mdk.src.rpm

Corporate Server 2.1/x86_64:
cf6fbbfee865b54584632655fa019ee3 x86_64/corporate/2.1/RPMS/kdebase-3.0.5-2.2mdk.x86_64.rpm
08867a45c5be3c48bbd4c93ced0b6ebb x86_64/corporate/2.1/RPMS/kdebase-devel-3.0.5-2.2mdk.x86_64.rpm
cf53476849eb402be28d6a52ac86a218 x86_64/corporate/2.1/RPMS/kdebase-nsplugins-3.0.5-2.2mdk.x86_64.rpm
a1ee293f258c76a720310183f0c4dda4 x86_64/corporate/2.1/SRPMS/kdebase-3.0.5-2.2mdk.src.rpm

Mandrake Linux 9.0:
b16612d8f4e68781cecaf9d32e12c50c 9.0/RPMS/kdebase-3.0.5a-1.4mdk.i586.rpm
a80f6c8029c536d59f92fcf7bcf1abd5 9.0/RPMS/kdebase-devel-3.0.5a-1.4mdk.i586.rpm
ae02c014e1994c25a1ee23a7eee8095c 9.0/RPMS/kdebase-nsplugins-3.0.5a-1.4mdk.i586.rpm
f9ebdbc69440ca1d11fcd5653f8173d6 9.0/SRPMS/kdebase-3.0.5a-1.4mdk.src.rpm

Mandrake Linux 9.1:
06423402c174ef11a64bd0ed44c4a624 9.1/RPMS/kdebase-3.1-83.5mdk.i586.rpm
bfa3c991495ec60d87858cd1563353ab 9.1/RPMS/kdebase-devel-3.1-83.5mdk.i586.rpm
cfef59c2e6d2c0faf7469ab2d036e091 9.1/RPMS/kdebase-kdm-3.1-83.5mdk.i586.rpm
ab122d6e7931a96d239e0aa6db401ffa 9.1/RPMS/kdebase-nsplugins-3.1-83.5mdk.i586.rpm
dbcedf83b6ed92afb8d30bdf54ec38d5 9.1/RPMS/mdkkdm-9.1-24.2mdk.i586.rpm
dc8f0c5f34088514900266eeaeff63bb 9.1/SRPMS/kdebase-3.1-83.5mdk.src.rpm
d5c82813906df0100a099e10a030672b 9.1/SRPMS/mdkkdm-9.1-24.2mdk.src.rpm

Mandrake Linux 9.1/PPC:
a34824fd162a8ce79258c4db2f2c2d56 ppc/9.1/RPMS/kdebase-3.1-83.5mdk.ppc.rpm
2f3bb4c00a78faa0792dd0353b6e09f2 ppc/9.1/RPMS/kdebase-devel-3.1-83.5mdk.ppc.rpm
818e187fcc9328683fd8e33044c43a78 ppc/9.1/RPMS/kdebase-kdm-3.1-83.5mdk.ppc.rpm
63a508bdfc7040697fd200c9f580204b ppc/9.1/RPMS/kdebase-nsplugins-3.1-83.5mdk.ppc.rpm
499cd7d3f1e4cc7b1276c0f9eed1c0cf ppc/9.1/RPMS/mdkkdm-9.1-24.2mdk.ppc.rpm
dc8f0c5f34088514900266eeaeff63bb ppc/9.1/SRPMS/kdebase-3.1-83.5mdk.src.rpm
d5c82813906df0100a099e10a030672b ppc/9.1/SRPMS/mdkkdm-9.1-24.2mdk.src.rpm

Bug IDs fixed (see for more information):

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:

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 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:

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

If you want to report vulnerabilities, please contact

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