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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.263 -- RHSA-2002:084-22 Updated nss_ldap packages fix pam_ldap vulnerability 6 June 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: pam_ldap module Vendor: Red Hat Operating System: 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 Impact: Execute Arbitrary Code/Commands Access Required: Remote Ref: ESB-2002.245 - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated nss_ldap packages fix pam_ldap vulnerability Advisory ID: RHSA-2002:084-22 Issue date: 2002-05-07 Updated on: 2002-06-04 Product: Red Hat Linux Keywords: pam_ldap format string syslog security Cross references: Obsoletes: RHSA-2000:024 CVE Names: CAN-2002-0374 - --------------------------------------------------------------------- 1. Topic: Updated nss_ldap packages are now available for Red Hat Linux 6.2, 7, 7.1, 7.2, and 7.3. These packages fix a string format vulnerability in the pam_ldap module. [Update Jun 4, 2002] Replacement packages have been added for Red Hat Linux 6.2. The previous packages could not be installed with the version of RPM that shipped with Red Hat Linux 6.2 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: The pam_ldap module provides authentication for user access to a system by consulting a directory using LDAP. Versions of pam_ldap prior to version 144 include a format string bug in the logging function. The packages included in this erratum update pam_ldap to version 144, fixing this bug. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0374 to this issue. Due to differences in the default behavior of the pam_ldap module when performing account management, the version of authconfig included in Red Rat Linux 7.2 generates incorrect /etc/pam.d/system-auth files for the version of pam_ldap included in this erratum. Thus, an updated version of authconfig for Red Hat Linux 7.2 is included in this erratum (versions of authconfig included with Red Hat Linux 7, 7.1, and 7.3 are not affected). Our thanks go to the pam_ldap team at padl.com for bringing this to our attention. A previous revision of this erratum included packages which could not be installed with the version of RPM included with Red Hat Linux 6.2. While they can be installed with versions of RPM which have been released as errata for Red Hat Linux 6.2, this revision includes packages which remove this restriction. Packages for Red Hat Linux 7, 7.1, 7.2, and 7.3 have not been modified. 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 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/nss_ldap-189-184.108.40.206.src.rpm alpha: ftp://updates.redhat.com/6.2/en/os/alpha/nss_ldap-189-220.127.116.11.alpha.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/nss_ldap-189-18.104.22.168.i386.rpm sparc: ftp://updates.redhat.com/6.2/en/os/sparc/nss_ldap-189-22.214.171.124.sparc.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/nss_ldap-189-1.7.src.rpm alpha: ftp://updates.redhat.com/7.0/en/os/alpha/nss_ldap-189-1.7.alpha.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/nss_ldap-189-1.7.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/nss_ldap-189-1.7.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/nss_ldap-189-1.7.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/nss_ldap-189-1.7.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/nss_ldap-189-1.7.ia64.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/nss_ldap-189-2.src.rpm ftp://updates.redhat.com/7.2/en/os/SRPMS/authconfig-126.96.36.199-1.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/nss_ldap-189-2.i386.rpm ftp://updates.redhat.com/7.2/en/os/i386/authconfig-188.8.131.52-1.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/nss_ldap-189-2.ia64.rpm ftp://updates.redhat.com/7.2/en/os/ia64/authconfig-184.108.40.206-1.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/nss_ldap-189-2.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/nss_ldap-189-2.i386.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 1d947c9c45f55aca6736b3f2999469a5 6.2/en/os/SRPMS/nss_ldap-189-220.127.116.11.src.rpm 4d57f85b69e5c9ec91f2578163172282 6.2/en/os/alpha/nss_ldap-189-18.104.22.168.alpha.rpm e1b67000a19c392dfa1e8c2db5f269ae 6.2/en/os/i386/nss_ldap-189-22.214.171.124.i386.rpm c9d5b7348ab2281447eda442363ab89e 6.2/en/os/sparc/nss_ldap-189-126.96.36.199.sparc.rpm 1eb57f3965d1c68d7891c8a858573ae1 7.0/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 6f3838a447d9766b782886695df52149 7.0/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 8484f482a1a6816a0c5e1dade2d7fd33 7.0/en/os/i386/nss_ldap-189-1.7.i386.rpm 1eb57f3965d1c68d7891c8a858573ae1 7.1/en/os/SRPMS/nss_ldap-189-1.7.src.rpm 6f3838a447d9766b782886695df52149 7.1/en/os/alpha/nss_ldap-189-1.7.alpha.rpm 8484f482a1a6816a0c5e1dade2d7fd33 7.1/en/os/i386/nss_ldap-189-1.7.i386.rpm 5805176343cfd2b7e033ce8cf8d0706d 7.1/en/os/ia64/nss_ldap-189-1.7.ia64.rpm 7216e533cd6cab1ff4fb46171a585b43 7.2/en/os/SRPMS/authconfig-188.8.131.52-1.src.rpm d977011dc7bbc3eea5b3e01ce7d364d9 7.2/en/os/SRPMS/nss_ldap-189-2.src.rpm 7282baea30503699772dd3e2aa866a11 7.2/en/os/i386/authconfig-184.108.40.206-1.i386.rpm d2b2402e6c59f886556872d6b2bc2f16 7.2/en/os/i386/nss_ldap-189-2.i386.rpm 0c451e5cb1cb7e5a5d7152aa91ee3834 7.2/en/os/ia64/authconfig-220.127.116.11-1.ia64.rpm 7d07126091032adfdae1d2192b9ca264 7.2/en/os/ia64/nss_ldap-189-2.ia64.rpm d977011dc7bbc3eea5b3e01ce7d364d9 7.3/en/os/SRPMS/nss_ldap-189-2.src.rpm d2b2402e6c59f886556872d6b2bc2f16 7.3/en/os/i386/nss_ldap-189-2.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> 8. References: http://www.padl.com/OSS/pam_ldap.html http://archives.neohapsis.com/archives/vulnwatch/2002-q2/0053.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0374 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: email@example.com 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 iQCVAwUBPP92aih9+71yA2DNAQGXLAP+Nl5+vOp4doECOYeH765HbxgHdNmSQN9i cgdbALLRSpM5BCNYSRLSubf/3CVEh/5GY+h7CCZOSomgTSIJ9iGNkXcYl4a0Hr9o 1AGkkdMZemumjZPk5VKaL9d+5fwhgM8K5q+dndWeyZqF1zedCs6dghgLcM7LkoSA KofXFTCn09I= =CmJ/ -----END PGP SIGNATURE-----