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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.445 -- RHSA-2002:172-07 Updated krb5 packages fix remote buffer overflow 19 August 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: krb5 Vendor: Red Hat Operating System: Red Hat Linux 6.2 Red Hat Linux 7.0 Red Hat Linux 7.1 Red Hat Linux 7.2 Red Hat Linux 7.3 Platform: Alpha i386 SPARC IA-64 Impact: Denial of Service Execute Arbitrary Code/Commands Access Required: Existing Account Ref: AL-2002.09 ESB-2002.394 - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated krb5 packages fix remote buffer overflow Advisory ID: RHSA-2002:172-07 Issue date: 2002-08-02 Updated on: 2002-08-14 Product: Red Hat Linux Keywords: Cross references: RHSA-2002:173 Obsoletes: CVE Names: CAN-2002-0391 - --------------------------------------------------------------------- 1. Topic: Updated Kerberos 5 packages are now available for Red Hat LInux 6.2, 7, 7.1, 7.2, and 7.3. These updates fix a buffer overflow in the XDR decoder. 2. Relevant releases/architectures: Red Hat Linux 6.2 - alpha, i386, sparc Red Hat Linux 7.0 - alpha, i386 Red Hat Linux 7.1 - alpha, i386, ia64 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 3. Problem description: Sun RPC is a remote procedure call framework which allows clients to invoke procedures in a server process over a network. XDR is a mechanism for encoding data structures for use with RPC. The Kerberos 5 network authentication system contains an RPC library which includes an XDR decoder derived from Sun's RPC implementation. The Sun implementation was recently demonstrated to be vulnerable to a heap overflow. It is believed that the attacker needs to be able to authenticate to the kadmin daemon for this attack to be successful. No exploits are known to currently exist. All users should upgrade to these errata packages which contain an updated version of Kerberos 5 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.0 5. RPMs required: Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/krb5-1.1.1-29.src.rpm alpha: ftp://updates.redhat.com/6.2/en/os/alpha/krb5-configs-1.1.1-29.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/krb5-workstation-1.1.1-29.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/krb5-server-1.1.1-29.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/krb5-libs-1.1.1-29.alpha.rpm ftp://updates.redhat.com/6.2/en/os/alpha/krb5-devel-1.1.1-29.alpha.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/krb5-configs-1.1.1-29.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/krb5-workstation-1.1.1-29.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/krb5-server-1.1.1-29.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/krb5-libs-1.1.1-29.i386.rpm ftp://updates.redhat.com/6.2/en/os/i386/krb5-devel-1.1.1-29.i386.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/krb5-configs-1.1.1-29.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/krb5-workstation-1.1.1-29.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/krb5-server-1.1.1-29.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/krb5-libs-1.1.1-29.sparc.rpm ftp://updates.redhat.com/6.2/en/os/sparc/krb5-devel-1.1.1-29.sparc.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/krb5-1.2.2-14.src.rpm alpha: ftp://updates.redhat.com/7.0/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.0/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/krb5-devel-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/krb5-libs-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/krb5-server-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.0/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/krb5-1.2.2-14.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm ftp://updates.redhat.com/7.1/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/krb5-devel-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/krb5-libs-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/krb5-server-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.1/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.1/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/krb5-1.2.2-14.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/krb5-devel-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/krb5-libs-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/krb5-server-1.2.2-14.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/krb5-1.2.4-2.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/krb5-devel-1.2.4-2.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/krb5-libs-1.2.4-2.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/krb5-server-1.2.4-2.i386.rpm ftp://updates.redhat.com/7.3/en/os/i386/krb5-workstation-1.2.4-2.i386.rpm 6. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 877c253289b1838c0af51de263efbce2 6.2/en/os/SRPMS/krb5-1.1.1-29.src.rpm 293e9901801a9b7c93994203cb7c5fa9 6.2/en/os/alpha/krb5-configs-1.1.1-29.alpha.rpm 44308ad6599a4145c9ca0f4038d4bcbc 6.2/en/os/alpha/krb5-devel-1.1.1-29.alpha.rpm ed5492fd6e45b8fee9895dcff61363d6 6.2/en/os/alpha/krb5-libs-1.1.1-29.alpha.rpm dfc12d8135f183eb1d98e600e21f01fb 6.2/en/os/alpha/krb5-server-1.1.1-29.alpha.rpm e7f346040bf9e3c42fd853d69cb2ef78 6.2/en/os/alpha/krb5-workstation-1.1.1-29.alpha.rpm 9345dc3a7a579a021061bca74e6b640a 6.2/en/os/i386/krb5-configs-1.1.1-29.i386.rpm 84c97facbf59bb70dde668187fefab4c 6.2/en/os/i386/krb5-devel-1.1.1-29.i386.rpm 972ec31e6103e145a1672618b9971d3e 6.2/en/os/i386/krb5-libs-1.1.1-29.i386.rpm 23f8f5f75850208b2d40dd10dc9927b5 6.2/en/os/i386/krb5-server-1.1.1-29.i386.rpm 4a6395c671391ed1fee6ea9e9ee33065 6.2/en/os/i386/krb5-workstation-1.1.1-29.i386.rpm 50b52160b0700d3384cf86371f7b374b 6.2/en/os/sparc/krb5-configs-1.1.1-29.sparc.rpm a82f945159c05141439de0df43bb25ed 6.2/en/os/sparc/krb5-devel-1.1.1-29.sparc.rpm ddcf9b4fec32e0f93da1806eb8cd72ba 6.2/en/os/sparc/krb5-libs-1.1.1-29.sparc.rpm db06836719bd389f056259ac3af63131 6.2/en/os/sparc/krb5-server-1.1.1-29.sparc.rpm f99f0d9bdc7ec03c99591cf8168b93b9 6.2/en/os/sparc/krb5-workstation-1.1.1-29.sparc.rpm 1703c67f82b8feaa0f76efce9ddf17d9 7.0/en/os/SRPMS/krb5-1.2.2-14.src.rpm f3e7ce965fafdec10fdad015fa7d079f 7.0/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm 2a98e1de18a262a3fa4fbe33bf61cf7d 7.0/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm 49f5808a9a778fab780456f7c54d8e7b 7.0/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm 8ad075c29413edacd36fa86789a20c93 7.0/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm 96bf320130172f0ed00eeec4f7543bff 7.0/en/os/i386/krb5-devel-1.2.2-14.i386.rpm a76356c93f518ce52f8ed678eff39ea6 7.0/en/os/i386/krb5-libs-1.2.2-14.i386.rpm 7eac994af1d0b1a0d913755dcd2931af 7.0/en/os/i386/krb5-server-1.2.2-14.i386.rpm d80a32bde5d7eacc3b6fc2418aa6f5d8 7.0/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm 1703c67f82b8feaa0f76efce9ddf17d9 7.1/en/os/SRPMS/krb5-1.2.2-14.src.rpm f3e7ce965fafdec10fdad015fa7d079f 7.1/en/os/alpha/krb5-devel-1.2.2-14.alpha.rpm 2a98e1de18a262a3fa4fbe33bf61cf7d 7.1/en/os/alpha/krb5-libs-1.2.2-14.alpha.rpm 49f5808a9a778fab780456f7c54d8e7b 7.1/en/os/alpha/krb5-server-1.2.2-14.alpha.rpm 8ad075c29413edacd36fa86789a20c93 7.1/en/os/alpha/krb5-workstation-1.2.2-14.alpha.rpm 96bf320130172f0ed00eeec4f7543bff 7.1/en/os/i386/krb5-devel-1.2.2-14.i386.rpm a76356c93f518ce52f8ed678eff39ea6 7.1/en/os/i386/krb5-libs-1.2.2-14.i386.rpm 7eac994af1d0b1a0d913755dcd2931af 7.1/en/os/i386/krb5-server-1.2.2-14.i386.rpm d80a32bde5d7eacc3b6fc2418aa6f5d8 7.1/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm e81bea51555ea322fe31891bd04a7a0e 7.1/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm 731a101f76a2797a3ea4b896fed78049 7.1/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm 16958f16d12b91c522ec50a50cd66a75 7.1/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm d364eac9c4feedfe0c6efc3eb7be1555 7.1/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm 1703c67f82b8feaa0f76efce9ddf17d9 7.2/en/os/SRPMS/krb5-1.2.2-14.src.rpm 96bf320130172f0ed00eeec4f7543bff 7.2/en/os/i386/krb5-devel-1.2.2-14.i386.rpm a76356c93f518ce52f8ed678eff39ea6 7.2/en/os/i386/krb5-libs-1.2.2-14.i386.rpm 7eac994af1d0b1a0d913755dcd2931af 7.2/en/os/i386/krb5-server-1.2.2-14.i386.rpm d80a32bde5d7eacc3b6fc2418aa6f5d8 7.2/en/os/i386/krb5-workstation-1.2.2-14.i386.rpm e81bea51555ea322fe31891bd04a7a0e 7.2/en/os/ia64/krb5-devel-1.2.2-14.ia64.rpm 731a101f76a2797a3ea4b896fed78049 7.2/en/os/ia64/krb5-libs-1.2.2-14.ia64.rpm 16958f16d12b91c522ec50a50cd66a75 7.2/en/os/ia64/krb5-server-1.2.2-14.ia64.rpm d364eac9c4feedfe0c6efc3eb7be1555 7.2/en/os/ia64/krb5-workstation-1.2.2-14.ia64.rpm a809b04a80d7ea5bfc25d192b4eec681 7.3/en/os/SRPMS/krb5-1.2.4-2.src.rpm a4a6a6904a2be6da0e68b1b176ed2b9b 7.3/en/os/i386/krb5-devel-1.2.4-2.i386.rpm 2fa946892a8194411500594d48706411 7.3/en/os/i386/krb5-libs-1.2.4-2.i386.rpm a5a79b11ba6ef0e9e3f88603c6ac95a6 7.3/en/os/i386/krb5-server-1.2.4-2.i386.rpm 863c43cef0cddb45cb79f9539e824024 7.3/en/os/i386/krb5-workstation-1.2.4-2.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> 7. References: http://web.mit.edu/kerberos/www/advisories/MITKRB5-SA-2002-001-xdr.txt http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0391 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. 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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 only. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPWEJUSh9+71yA2DNAQGOJAP/duXyRnoYDYyttS7L8HsGzmjBH/JnMoQy UP76vh9y20VhymTp+Kaz7M2DfZZuNqHOFYPrTnkcXgsYpAR2NbbikKDnj1g74b7S FJJOrqgMlpYdjguvsVAnKMliTgeSVVNswM/y5OWBD+MH+V4FpcTTlTod28NsJsxy 7t4VVatxoCU= =5IcR -----END PGP SIGNATURE-----