Security update for bind8 and bindutil
(Last modified: 07AUG2002)
solutions Security update for bind8 and bindutil SuSE Linux Maintenance Web (1191cc48aa64547beb71e42bc5751e31)
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The bug itself is a buffer overflow that can be triggered if a DNS server sends multiple CNAME records in a DNS response.
This bug has been fixed for the gethostbyXXX class of functions in GNU libc in 1999. Unfortunately, there is similar code in the getnetbyXXX functions in recent glibc implementations, and the code is enabled by default.
Until glibc patches are available, we recommend that you disable DNS lookups of network names in
nsswitch.conf. Simply replace the line containing the tag "networks:" with this line:
The resolver bug is also present in the libbind library included in BIND. This library is used by utilities included in the
We are therefore providing security updates for
bind8that address this vulnerability. As communicated previously, the SuSE security team is not providing fixes for BIND4 anymore.
bind9packages shipped by SuSE are not vulnerable to this bug.
Please download the update package for your distribution and verify its integrity by the methods listed in section 3) of this announcement.
You should at least upgrade the bindutil package using
rpm -Fvh bindutil*.rpm
rpm -Fvh bind8.rpm bindutil.rpm
If you are running the BIND name server, and updated the bind8 package, you should restart the name server process by issuing
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Download the source code of the patches for maintained products.
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