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Red Hat, Inc. Security Advisory
Synopsis: New openldap packages.
Advisory ID: RHSA-2000:012-05
Issue date: 2000-04-13
Updated on: 2000-04-21
Product: Red Hat Linux
Keywords: openldap startup symlink overwrite denial
Cross references: N/A
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1. Topic:
New openldap packages are available which fix a security
vulnerability in Red Hat Linux 6.1 and 6.2.
2. Relevant releases/architectures:
Red Hat Linux 6.1 - i386 alpha sparc
Red Hat Linux 6.2 - i386 alpha sparc
3. Problem description:
OpenLDAP follows symbolic links when creating files. The default location for
these files is /usr/tmp, which is a symlink to /tmp, which in turn is a
world-writable directory. Local users can destroy the contents of any file on any
mounted filesystem.
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
Administrators with existing databases should also move their NEXTID and *.dbb
files from /usr/tmp to /var/lib/ldap, and verify that the 'directory' setting in
/etc/openldap/slapd.conf is changed accordingly.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
10714 - Insecure file creation using static files which follow symlinks.
6. Obsoleted by:
N/A
7. Conflicts with:
N/A
8. RPMs required:
Red Hat Linux 6.1:
intel:
ftp://updates.redhat.com/6.1/i386/openldap-1.2.9-6.i386.rpm
alpha:
ftp://updates.redhat.com/6.1/alpha/openldap-1.2.9-6.alpha.rpm
sparc:
ftp://updates.redhat.com/6.1/sparc/openldap-1.2.9-6.sparc.rpm
sources:
ftp://updates.redhat.com/6.1/SRPMS/openldap-1.2.9-6.src.rpm
Red Hat Linux 6.2:
intel:
ftp://updates.redhat.com/6.2/i386/openldap-1.2.9-6.i386.rpm
alpha:
ftp://updates.redhat.com/6.2/alpha/openldap-1.2.9-6.alpha.rpm
sparc:
ftp://updates.redhat.com/6.2/sparc/openldap-1.2.9-6.sparc.rpm
sources:
ftp://updates.redhat.com/6.2/SRPMS/openldap-1.2.9-6.src.rpm
9. Verification:
MD5 sum Package Name
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fa79c61565a72407db4695ef8468a482 6.1/alpha/openldap-1.2.9-6.alpha.rpm
058c4aa63710da7490f98da4b3cad53d 6.1/i386/openldap-1.2.9-6.i386.rpm
17fbdb33172a7884f56b4fc746b1b763 6.1/SRPMS/openldap-1.2.9-6.src.rpm
816fccd85990833f7c5dfb7f2dc6e0a1 6.1/sparc/openldap-1.2.9-6.sparc.rpm
fa79c61565a72407db4695ef8468a482 6.2/alpha/openldap-1.2.9-6.alpha.rpm
816fccd85990833f7c5dfb7f2dc6e0a1 6.2/sparc/openldap-1.2.9-6.sparc.rpm
17fbdb33172a7884f56b4fc746b1b763 6.2/SRPMS/openldap-1.2.9-6.src.rpm
058c4aa63710da7490f98da4b3cad53d 6.2/i386/openldap-1.2.9-6.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key
is available at:
http://www.redhat.com/corp/contact.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>
10. References:
Thanks also go to Stan Bubrouski for reporting this problem.
Cristian
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Cristian Gafton -- gafton@redhat.com -- Red Hat, Inc.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"How could this be a problem in a country where we have Intel and
Microsoft?" --Al Gore on Y2K
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