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.
These updated packages contain a patch from Caldera Systems, Inc.
that fixes this vulernability. It should be noted that as of yet
there are no known exploits for this problem, but all users should
update to these glibc packages.
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".
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
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