5444831 2000-09-07 18:50 /172 rader/ Brevbäraren (som är implementerad i) Python
Mottagare: Bugtraq (import) <12645>
Ärende: MDKSA-2000:045 - glibc update
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From: Linux Mandrake Security Team <security@LINUX-MANDRAKE.COM>
To: BUGTRAQ@SECURITYFOCUS.COM
Message-ID: <20000906222609.A6026@mandrakesoft.com>
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________________________________________________________________________
Linux-Mandrake Security Update Advisory
________________________________________________________________________
Package name: glibc
Date: September 6th, 2000
Advisory ID: MDKSA-2000:045
Affected versions: 7.0, 7.1
________________________________________________________________________
Problem Description:
A bug was discovered in ld.so that could allow local users to obtain
root privileges. The dynamic loader, ld.so, is responsible for
making shared libraries available within a program at run-time.
Normally, a user is allowed to load additional shared libraries when
executing a program; they can be specified with environment
variables such as LD_PRELOAD. Because this is not acceptable for
applications that are setuid root, ld.so normally removes these
environment variables for setuid root programs. The discovered bug
causes these environment variables to not be removed under certain
circumstances. While setuid programs themselves are not vulnerable,
external programs they execute can be affected by this problem.
A number of additional bugs have been found in the glibc locale and
internationaliztion security checks. In internationalized programs,
users are permitted to select a locale or choose message catalogues
using environment variables such as LANG or LC_*. The content of
these variables is then used as part of the pathname used to search
message catalogues or locale files. Under normal circumstances, if
these variables contained the "/" character, a program could load the
internationalization files from arbitrary directories. This is not
acceptable for setuid programs, which is the reason glibc does not
allow certain settings of these variables if the program is setuid
or setgid. However, some of these checks were done in inapporpriate
places, contained bugs, or were missing entirely. It is highly
probable that some of these bugs can be used for local root
exploits.
________________________________________________________________________
Please verify these md5 checksums of the updates prior to upgrading to
ensure the integrity of the downloaded package. You can do this by
running the md5sum program on the downloaded package by using
"md5sum package.rpm".
Linux-Mandrake 7.0: 05e57344e0141d4f5085f78155b58b66
7.0/RPMS/glibc-2.1.3-16mdk.i586.rpm 284ee4868af286469169a4a6605d3172
7.0/RPMS/glibc-devel-2.1.3-16mdk.i586.rpm
114c605878c338ed36aabe9b673cd4fd
7.0/RPMS/glibc-profile-2.1.3-16mdk.i586.rpm
1f263ca77795b93b54e0af5644149407 7.0/SRPMS/glibc-2.1.3-16mdk.src.rpm
Linux-Mandrake 7.1: f34a2988c60b32baeef205c0a0586b8e
7.1/RPMS/glibc-2.1.3-17mdk.i586.rpm 28c96de9e746eb0c7b3bcc0c58728fd9
7.1/RPMS/glibc-devel-2.1.3-17mdk.i586.rpm
27805991e31882d827bb032453fd5f16
7.1/RPMS/glibc-profile-2.1.3-17mdk.i586.rpm
eec3d0d92b216e0a47bc4909b6fbdfaf 7.1/SRPMS/glibc-2.1.3-17mdk.src.rpm
________________________________________________________________________
To upgrade automatically, use « MandrakeUpdate ».
If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and uprade with "rpm -Uvh package_name".
You can download the updates directly from:
ftp://ftp.linux.tucows.com/pub/distributions/Mandrake/Mandrake/updates
ftp://ftp.free.fr/pub/Distributions_Linux/Mandrake/updates
Or try one of the other mirrors listed at:
http://www.linux-mandrake.com/en/ftp.php3.
Updated packages are available in the "updates/[ver]/RPMS/"
directory. For example, if you are looking for an updated RPM
package for Linux-Mandrake 7.1, look for it in "updates/7.1/RPMS/".
Updated source RPMs are available as well, but you generally do not
need to download them.
Please be aware that sometimes it takes the mirrors a few hours to
update, so if you want an immediate upgrade, please use one of the two
above-listed mirrors.
You can view other security advisories for Linux-Mandrake at:
http://www.linux-mandrake.com/en/fupdates.php3
If you want to report vulnerabilities, please contact
security@linux-mandrake.com
________________________________________________________________________
Linux-Mandrake has two security-related mailing list services that
anyone can subscribe to:
security-announce@linux-mandrake.com
Linux-Mandrake's security announcements mailing list. Only
announcements are sent to this list and it is read-only.
security-discuss@linux-mandrake.com
Linux-Mandrake's security discussion mailing list. This list is
open to anyone to discuss Linux-Mandrake security specifically and
Linux security in general.
To subscribe to either list, send a message to
sympa@linux-mandrake.com
with "subscribe [listname]" in the body of the message.
To remove yourself from either list, send a message to
sympa@linux-mandrake.com
with "unsubscribe [listname]" in the body of the message.
To get more information on either list, send a message to
sympa@linux-mandrake.com
with "info [listname]" in the body of the message.
Optionally, you can use the web interface to subscribe to or
unsubscribe from either list:
http://www.linux-mandrake.com/en/flists.php3#security
________________________________________________________________________
Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team
<security@linux-mandrake.com>
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