Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.266 -- RHSA-2002:105-09 Updated bind packages fix denial of service attack 6 June 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: ISC BIND 9 Vendor: Red Hat Operating System: Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3 Platform: alpha i386 ia64 Impact: Denial of Service Access Required: Remote Ref: ESB-2002.260 - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated bind packages fix denial of service attack Advisory ID: RHSA-2002:105-09 Issue date: 2002-06-02 Updated on: 2002-06-04 Product: Red Hat Linux Keywords: bind srv consistancy dos Cross references: Obsoletes: RHSA-2001:007 CVE Names: CAN-2002-0400 - --------------------------------------------------------------------- 1. Topic: Version 9 of the bind name prior to version 9.2.1 contain a denial of service vulnerability. 2. Relevant releases/architectures: Red Hat Linux 7.1 - alpha, i386, ia64 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 3. Problem description: BIND (Berkeley Internet Name Domain) is an implementation of the DNS (Domain Name System) protocols. Versions of BIND 9 prior to 9.2.1 have a bug that causes certain requests to the BIND name server (named) to fail an internal consistency check, causing the name server to stop responding to requests. This can be used by a remote attacker to cause a denial of service (DOS) attack against name servers. Red Hat Linux 7.1, 7.2 and 7.3 shipped with versions of BIND vulnerable to this issue. All users of BIND are advised to upgrade to the errata packages containing BIND 9.2.1 which is not vulnerable to this issue. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 6. RPMs required: Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/bind-9.2.1-0.70.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/bind-9.2.1-0.70.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/bind-devel-9.2.1-0.70.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/bind-utils-9.2.1-0.70.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/bind-9.2.1-0.70.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/bind-devel-9.2.1-0.70.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/bind-utils-9.2.1-0.70.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/bind-9.2.1-0.70.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/bind-devel-9.2.1-0.70.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/bind-utils-9.2.1-0.70.ia64.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/bind-9.2.1-0.7x.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/bind-9.2.1-0.7x.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/bind-devel-9.2.1-0.7x.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/bind-utils-9.2.1-0.7x.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/bind-9.2.1-0.7x.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/bind-devel-9.2.1-0.7x.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/bind-utils-9.2.1-0.7x.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/bind-9.2.1-0.7x.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/bind-9.2.1-0.7x.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/bind-devel-9.2.1-0.7x.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/bind-utils-9.2.1-0.7x.i386.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- b7c3a3e21b75f3cc3b67891988c3a061 7.1/en/os/SRPMS/bind-9.2.1-0.70.src.rpm 99d1b6ba14c3df1c5f31a3d4e2627095 7.1/en/os/alpha/bind-9.2.1-0.70.alpha.rpm a6c926dd242e6248cd3fd7e830f09f2d 7.1/en/os/alpha/bind-devel-9.2.1-0.70.alpha.rpm 32c028a6a58726fcb66fcd59a2540696 7.1/en/os/alpha/bind-utils-9.2.1-0.70.alpha.rpm eaf7057b6f168b79f4dc31956e7fdc8e 7.1/en/os/i386/bind-9.2.1-0.70.i386.rpm 210292b24525009ee5c7cdf2b8c4b7a8 7.1/en/os/i386/bind-devel-9.2.1-0.70.i386.rpm d3229a5c3ab3b30a64e923d15edbe3bf 7.1/en/os/i386/bind-utils-9.2.1-0.70.i386.rpm b05d4ff48a2cd89babf50e8097489245 7.1/en/os/ia64/bind-9.2.1-0.70.ia64.rpm e41811e4bfc33aad40e609a8c71cace3 7.1/en/os/ia64/bind-devel-9.2.1-0.70.ia64.rpm 8737f157ddb70f1e272d34c6448bf0bf 7.1/en/os/ia64/bind-utils-9.2.1-0.70.ia64.rpm 2443a2f29ddf9af62eb48038bde0b9ee 7.2/en/os/SRPMS/bind-9.2.1-0.7x.src.rpm 16f6b21979fcbd90a5b044f5208ef20b 7.2/en/os/i386/bind-9.2.1-0.7x.i386.rpm e6c63bf2190d50a3b014586304b97465 7.2/en/os/i386/bind-devel-9.2.1-0.7x.i386.rpm 6ca180c3e8ce4477cddd734843374e18 7.2/en/os/i386/bind-utils-9.2.1-0.7x.i386.rpm 50fba0e5fa8a33cc4db9020f76140824 7.2/en/os/ia64/bind-9.2.1-0.7x.ia64.rpm 983dd7df3f5ce85e50fcc92ec6055b05 7.2/en/os/ia64/bind-devel-9.2.1-0.7x.ia64.rpm 927cd81e750a524dace2d4f085b10976 7.2/en/os/ia64/bind-utils-9.2.1-0.7x.ia64.rpm 2443a2f29ddf9af62eb48038bde0b9ee 7.3/en/os/SRPMS/bind-9.2.1-0.7x.src.rpm 16f6b21979fcbd90a5b044f5208ef20b 7.3/en/os/i386/bind-9.2.1-0.7x.i386.rpm e6c63bf2190d50a3b014586304b97465 7.3/en/os/i386/bind-devel-9.2.1-0.7x.i386.rpm 6ca180c3e8ce4477cddd734843374e18 7.3/en/os/i386/bind-utils-9.2.1-0.7x.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/about/contact/pgpkey.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> 8. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0400 Copyright(c) 2000, 2001, 2002 Red Hat, Inc. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPP98XSh9+71yA2DNAQHrTwP6AxjLWm2BUn5Hxejsix4m8hqx+pzOPsPi rpb3qiK0RUqh/0NEjpdrPmdyyh7+POcZ7K71+1B+Sn8H6/YuyZah081ROHbcVjDe 6BVXCiPJKllzQMcrzJb7g18jpc2LFQtjplMdTqP94fzp7fwZC31hLclNy4TCpHI9 w8fzXn4e2LQ= =ltwG -----END PGP SIGNATURE-----