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SuSE Security Announcement: bind8

Nov 16, 2000, 20:41 (0 Talkback[s])
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Date: Thu, 16 Nov 2000 16:29:15 +0100 (MET)
From: Roman Drahtmueller
Subject: [suse-security-announce] SuSE Security Announcement: bind8 (SuSE-SA:2000:45)

                        SuSE Security Announcement

        Package:                bind8
        Announcement-ID:        SuSE-SA:2000:45
        Date:                   Thursday, November 16th, 2000 16:00 MEST
        Affected SuSE versions: 6.0, 6.1, 6.2, 6.3, 6.4
        Vulnerability Type:     remote denial of service
        Severity (1-10):        7
        SuSE default package:   no
        Other affected systems: all systems using bind, version 8.2.2 before
                                patchlevel 7

    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, the Berkeley Internet Name Daemon, versions before 8.2.2p7, has been found vulnerable to two denial of service attacks: named may crash after a compressed zone transfer request (ZXFR) and if an SRV record (defined in RFC2782) is sent to the server. Administrators testing the ZXFR bug should be aware that it can take several seconds after the triggering the bug until the nameserver daemon crashes. SuSE versions 6.0 through 6.4 are affected by these two problems. The bind8 package in SuSE-7.0 is not affected because a different version of bind8 (8.2.3) was used in this distribution. By the release time of the SuSE-7.0 distribution our engineers have determined that the problems we had with stalling zone transfers under some obscure conditions were not present with the 8.2.3 release of the package.

Administrators are strongly recommended to upgrade their bind8 package using the provided packages from the sources below. There is a temporary fix for the ZXFR problem (disable zone transfers) but none for the SRV record problem.

For the latest information about security vulnerabilities in the bind name server consider the Internet Software Consortium bind security webpage at .

To check if your system has the vulnerable package installed, use the command `rpm -q ´. If applicable, please choose the update package(s) 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)
`rpm --checksig --nogpg file.rpm',
The md5 sums under each package are to prove the package authenticity, independently from the md5 checksums in the rpm package format.

i386 Intel Platform:

source rpm:

source rpm:

source rpm:

source rpm:

SuSE-6.0 Please use the package from the 6.1 distribution.

AXP Alpha Platform:

source rpm:

source rpm:

source rpm:

PPC Power PC Platform:

source rpm:

2) Pending vulnerabilities in SuSE Distributions and Workarounds:

A new security announcement follows this advisory.

3) standard appendix:

SuSE runs two security mailing lists to which any interested party may subscribe:
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list. To subscribe, send an email to
- SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent to this list. To subscribe, send an email to

For general information or the frequently asked questions (faq) send mail to: or respectively.

SuSE's security contact is

Roman Drahtmüller.
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| Roman Drahtmüller //          "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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