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Home » Hacking News » MDKSA-2003:017 - Updated pam packages fix root authorization handling in pam_xau

MDKSA-2003:017 - Updated pam packages fix root authorization handling in pam_xau

by Nikola Strahija on February 19th, 2003 Andreas Beck discovered that the pam_xauth module would forward authorization information from the root account to unprivileged users.

Package name: pam
Advisory ID: MDKSA-2003:017
Date: February 18th, 2003

Affected versions: 8.1, 8.2, 9.0, Multi Network Firewall 8.2

Problem Description:

Andreas Beck discovered that the pam_xauth module would forward
authorization information from the root account to unprivileged users.
This can be exploited by a local attacker to gain access to the root
user's X session. In order for it to be successfully exploited, the
attacker would have to somehow get the root user to su to the account
belonging to the attacker.


Updated Packages:

Mandrake Linux 8.1:
012c289119d2c3e1f13e086eb46603b0 8.1/RPMS/pam-0.75-25.1mdk.i586.rpm
f39c461c65b06233e97bfc86a3c847f4 8.1/RPMS/pam-devel-0.75-25.1mdk.i586.rpm
d461c8185df78f0dfc6035ae195500b8 8.1/RPMS/pam-doc-0.75-25.1mdk.i586.rpm
376bd2062e8fb2128008bc6075bae8d1 8.1/RPMS/pam_ldap-156-1.1mdk.i586.rpm
a1afc044aef022370275316123e9cbc5 8.1/SRPMS/pam-0.75-25.1mdk.src.rpm

Mandrake Linux 8.1/IA64:
e5fde05f5d39182a6b253ba9ead66043 ia64/8.1/RPMS/pam-0.75-25.1mdk.ia64.rpm
eae2fdd91901a61cd8d22dddf35f03c2 ia64/8.1/RPMS/pam-devel-0.75-25.1mdk.ia64.rpm
1f842b6909b7c31c003b62e4b4997706 ia64/8.1/RPMS/pam-doc-0.75-25.1mdk.ia64.rpm
f22145546bff2930131da1b2503692ce ia64/8.1/RPMS/pam_ldap-156-1.1mdk.ia64.rpm
a1afc044aef022370275316123e9cbc5 ia64/8.1/SRPMS/pam-0.75-25.1mdk.src.rpm

Mandrake Linux 8.2:
6f9d110a83450b1358384ea19e23a812 8.2/RPMS/pam-0.75-25.1mdk.i586.rpm
ef33ba24e3fc431a89b0fba7031d55b8 8.2/RPMS/pam-devel-0.75-25.1mdk.i586.rpm
00fb03da32fcdef0b0a27ae1fb88307d 8.2/RPMS/pam-doc-0.75-25.1mdk.i586.rpm
16b952b71669460c7c4b9441b37e2014 8.2/RPMS/pam_ldap-156-1.1mdk.i586.rpm
a1afc044aef022370275316123e9cbc5 8.2/SRPMS/pam-0.75-25.1mdk.src.rpm

Mandrake Linux 8.2/PPC:
272b33cad29ea3ddecd03a56bab0b727 ppc/8.2/RPMS/pam-0.75-25.1mdk.ppc.rpm
8861331f5d5218ac5116813cc03abad0 ppc/8.2/RPMS/pam-devel-0.75-25.1mdk.ppc.rpm
08d5a458fab9e006344d87d7fe67168d ppc/8.2/RPMS/pam-doc-0.75-25.1mdk.ppc.rpm
0b73c3aba3ab7bdd2548a69934fa79f0 ppc/8.2/RPMS/pam_ldap-156-1.1mdk.ppc.rpm
a1afc044aef022370275316123e9cbc5 ppc/8.2/SRPMS/pam-0.75-25.1mdk.src.rpm

Mandrake Linux 9.0:
dc82d88d63dafc3668e7ab4f1d09d404 9.0/RPMS/pam-0.75-25.1mdk.i586.rpm
ca86fc0f07855ced3f9ed7793608d376 9.0/RPMS/pam-devel-0.75-25.1mdk.i586.rpm
65545ca4597990fb5ccf0218a2b6c922 9.0/RPMS/pam-doc-0.75-25.1mdk.i586.rpm
b70c25f7b8a3b5f86149dd199003a4ff 9.0/RPMS/pam_ldap-156-1.1mdk.i586.rpm
a1afc044aef022370275316123e9cbc5 9.0/SRPMS/pam-0.75-25.1mdk.src.rpm

Multi Network Firewall 8.2:
6f9d110a83450b1358384ea19e23a812 mnf8.2/RPMS/pam-0.75-25.1mdk.i586.rpm
a1afc044aef022370275316123e9cbc5 mnf8.2/SRPMS/pam-0.75-25.1mdk.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

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