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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.
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-----BEGIN PGP SIGNED MESSAGE-----
______________________________________________________________________________
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 http://www.isc.org/products/BIND/bind-security.html .
To check if your system has the vulnerable package installed, use the
command `rpm -q <package name>´. 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:
SuSE-6.4
ftp://ftp.suse.com/pub/suse/i386/update/6.4/n1/bind8-8.2.2-139.i386.rpm
c6f2242efe722aaa4320010e00ddc080
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.4/zq1/bind8-8.2.2-139.src.rpm
ecd26bdf60d7950585649bc638a1d812
SuSE-6.3
ftp://ftp.suse.com/pub/suse/i386/update/6.3/n1/bind8-8.2.2-139.i386.rpm
d3f51528ad2120cd3dc6517c2bc26c0a
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.3/zq1/bind8-8.2.2-139.src.rpm
6f1b8c1227d4876389a28d416a952713
SuSE-6.2
ftp://ftp.suse.com/pub/suse/i386/update/6.2/n1/bind8-8.2.2-139.i386.rpm
4d8a9f4c6e041326929bbdae97c10105
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.2/zq1/bind8-8.2.2-139.src.rpm
83807820676d98687797ffff6f5b425c
SuSE-6.1
ftp://ftp.suse.com/pub/suse/i386/update/6.1/n1/bind8-8.2.2-139.i386.rpm
1694cf40b5fa41361749297c9cddbca4
source rpm:
ftp://ftp.suse.com/pub/suse/i386/update/6.1/zq1/bind8-8.2.2-139.src.rpm
8c5f727554e12a5aedb96de3db663518
SuSE-6.0
Please use the package from the 6.1 distribution.
AXP Alpha Platform:
SuSE-6.4
ftp://ftp.suse.com/pub/suse/axp/update/6.4/n1/bind8-8.2.2-139.alpha.rpm
51f61faaad78160fb3dcc68a8588c209
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.4/zq1/bind8-8.2.2-139.src.rpm
f42c51962852f8ff14e2d6423de62aec
SuSE-6.3
ftp://ftp.suse.com/pub/suse/axp/update/6.3/n1/bind8-8.2.2-139.alpha.rpm
4d16cecb0da4f8ed6bff9c92655b9036
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.3/zq1/bind8-8.2.2-139.src.rpm
d8c4d1d9f0a14249151aa9d9e25f1db8
SuSE-6.1
ftp://ftp.suse.com/pub/suse/axp/update/6.1/n1/bind8-8.2.2-139.alpha.rpm
6a4f5b18072cca93f9064fdc802e50fb
source rpm:
ftp://ftp.suse.com/pub/suse/axp/update/6.1/zq1/bind8-8.2.2-139.src.rpm
a3eec237cc642739b5b6c6eea6d197c0
PPC Power PC Platform:
SuSE-6.4
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/n1/bind8-8.2.2-139.ppc.rpm
65e82b875e7f8ff7409062d502d56115
source rpm:
ftp://ftp.suse.com/pub/suse/ppc/update/6.4/zq1/bind8-8.2.2-139.src.rpm
fd2a6e2a29a80b997758d4245913ff51
______________________________________________________________________________
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:
suse-security@suse.com
- general/linux/SuSE security discussion.
All SuSE security announcements are sent to this list.
To subscribe, send an email to
<suse-security-subscribe@suse.com>.
suse-security-announce@suse.com
- SuSE's announce-only mailing list.
Only SuSE's security annoucements are sent to this list.
To subscribe, send an email to
<suse-security-announce-subscribe@suse.com>.
For general information or the frequently asked questions (faq)
send mail to:
<suse-security-info@suse.com> or
<suse-security-faq@suse.com> respectively.
===============================================
SuSE's security contact is <security@suse.com>.
===============================================
Regards,
Roman Drahtmüller.
- - --
- -
| Roman Drahtmüller <draht@suse.de> // "Caution: Cape does |
SuSE GmbH - Security Phone: // not enable user to fly."
| Nürnberg, Germany +49-911-740530 // (Batman Costume warning label) |
- -
______________________________________________________________________________
The information in this advisory may be distributed or reproduced,
provided that the advisory is not modified in any way.
SuSE GmbH makes no warranties of any kind whatsoever with respect
to the information contained in this security advisory.
Type Bits/KeyID Date User ID
pub 2048/3D25D3D9 1999/03/06 SuSE Security Team <security@suse.de>
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This archive was generated by hypermail 2.1.0
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