SuSE Security Announcement: bind8Jan 31, 2001, 06:55 (4 Talkback[s])
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Date: Wed, 31 Jan 2001 02:18:25 +0100
SuSE Security Announcement Package: bind8 Announcement-ID: SuSE-SA:2001:03 Date: Tuesday, January 30th, 2000 23:40 MEST Affected SuSE versions: 6.0, 6.1, 6.2, 6.3, 6.4, 7.0, 7.1 Vulnerability Type: remote root compromise Severity (1-10): 9 SuSE default package: no Other affected systems: all systems using bind, versions before 8.2.3-REL Content of this advisory: 1) security vulnerability resolved: bind8 problem description, discussion, solution and upgrade information 2) pending vulnerabilities, solutions, workarounds 3) standard appendix (further information)
1) problem description, brief discussion, solution, upgrade information
bind-8.x in all versions of the SuSE distributions contain a bug in the transaction signature handling code that can allow to remotely over- flow a buffer and thereby execute arbitrary code as the user running the nameserver (this is user named by default on SuSE systems). In addition to this bug, another problem allows for a remote attacker to collect information about the running bind process (this has been found by Claudio Musmarra ). For more information on these bugs, please visit the CERT webpage at http://www.cert.org/advisories/CA-2001-02.html and the bind bugs webpage at http://www.isc.org/products/BIND/bind-security.html .
The problem is existent in the upcoming SuSE distribution 7.1 that will be available by February 10th in the CD/DVD version.
There exists no reasonable method to circumvent the problems other than to update the package as described below.
Please choose the update package for your distribution from the
URLs listed below and download the necessary rpm files. Then,
install the package using the command `rpm -Uhv file.rpm´.
rpm packages have an internal md5 checksum that protects against
file corruption. You can verify this checksum using the command
(independently from the md5 signatures below)
SPECIAL INSTALL INSTRUCTIONS:
If you run a bind8 nameserver on your system, please update the package immediately. In order for the updated package to become active, the nameserver process "named" needs to be restarted. Do this using the command
as root after performing the rpm command as shown above. Afterwards, check for the running daemon using the ps command as `ps aux´. The named process should show a new starting time. Repeat the `rcnamed restart´ command if the nameserver shut down too slowly to release the socket for the new server.
i386 Intel Platform:
AXP Alpha Platform:
PPC Power PC Platform:
2) Pending vulnerabilities in SuSE Distributions and Workarounds:
SuSE distributions contain the bind nameserver in Version 4 as well. bind-4.x in the currently used version has security-related bugs, some of which are similar to the ones in the 8.x versions. We will provide update packages as well as an announcement for the bind (not bind8) package shortly, along with an own announcement.
3) standard appendix:
SuSE runs two security mailing lists to which any interested party may subscribe:
SuSE's security contact is email@example.com.
- - | Roman Drahtmüller firstname.lastname@example.org // "Caution: Cape does | SuSE GmbH - Security Phone: // not enable user to fly." | Nürnberg, Germany +49-911-740530 // (Batman Costume warning label) | -
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