7306811 2001-10-16 15:15 -0400 /115 rader/ <bugzilla@redhat.com>
Sänt av: joel@lysator.liu.se
Importerad: 2001-10-16 22:57 av Brevbäraren
Extern mottagare: redhat-watch-list@redhat.com
Extern kopiemottagare: bugtraq@securityfocus.com
Extern kopiemottagare: linux-security@redhat.com
Mottagare: Bugtraq (import) <19455>
Ärende: [RHSA-2001:132-03] New util-linux packages available to fix /bin/login pam problem
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From: bugzilla@redhat.com
To: redhat-watch-list@redhat.com
Cc: bugtraq@securityfocus.com, linux-security@redhat.com
Message-ID: <200110161915.f9GJFxo31506@porkchop.redhat.com>
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Red Hat, Inc. Red Hat Security Advisory
Synopsis: New util-linux packages available to fix /bin/login pam problem
Advisory ID: RHSA-2001:132-03
Issue date: 2001-10-11
Updated on: 2001-10-16
Product: Red Hat Linux
Keywords: login pam pam_limits
Cross references:
Obsoletes: RHSA-2001:095-04
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1. Topic:
New util-linux packages are available that fix a problem with
/bin/login's PAM implementation. This could, in some non-default
setups, cause users to receive credentials of other users. It is
recommended that all users update to the fixed packages.
2. Relevant releases/architectures:
Red Hat Linux 7.1 - alpha, i386, ia64
3. Problem description:
A problem existed in /bin/login's PAM implementation; it stored the
value of a static pwent buffer across PAM calls; when used with some
PAM modules in non-default configuration (such as pam_limits), it
would overwrite the buffer, causing a user to get credentials of
another user.
Thanks go to Tarhon-Onu Victor <mituc@ac.tuiasi.ro> for bringing the
problem to our attention, and to Olaf Kirch <okir@caldera.de> for
providing the patch.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
To update all RPMs for your particular architecture, run:
rpm -Fvh [filenames]
where [filenames] is a list of the RPMs you wish to upgrade. Only
those RPMs which are currently installed will be updated. Those RPMs
which are not installed but included in the list will not be updated.
Note that you can also use wildcards (*.rpm) if your current
directory *only* contains the desired RPMs.
Please note that this update is also available via Red Hat Network.
Many people find this an easier way to apply updates. To use Red Hat
Network, launch the Red Hat Update Agent with the following command:
up2date
This will start an interactive process that will result in the
appropriate RPMs being upgraded on your system.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
51646 - pam limits drops other user privileges
6. RPMs required:
Red Hat Linux 7.1:
SRPMS:
ftp://updates.redhat.com/7.1/en/os/SRPMS/util-linux-2.11f-11.7.1.src.rpm
alpha:
ftp://updates.redhat.com/7.1/en/os/alpha/util-linux-2.11f-11.7.1.alpha.rpm
i386:
ftp://updates.redhat.com/7.1/en/os/i386/util-linux-2.11f-11.7.1.i386.rpm
ia64:
ftp://updates.redhat.com/7.1/en/os/ia64/util-linux-2.11f-11.7.1.ia64.rpm
7. Verification:
MD5 sum Package Name
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db33b22f50978471a25fd5cc973f8f54 7.1/en/os/SRPMS/util-linux-2.11f-11.7.1.src.rpm
d55f6ec42e3c0268f2ab4decb24deb53 7.1/en/os/alpha/util-linux-2.11f-11.7.1.alpha.rpm
2bf1db1cadc50f783220f70aa2b7a09c 7.1/en/os/i386/util-linux-2.11f-11.7.1.i386.rpm
568c4ec61cb9cc0ebd6313fb14d0419c 7.1/en/os/ia64/util-linux-2.11f-11.7.1.ia64.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/about/contact/pgpkey.html
You can verify each package with the following command:
rpm --checksig <filename>
If you only wish to verify that each package has not been corrupted or
tampered with, examine only the md5sum with the following command:
rpm --checksig --nogpg <filename>
8. References:
Copyright(c) 2000, 2001 Red Hat, Inc.
(7306811) / <bugzilla@redhat.com>/--------(Ombruten)