__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN Red Hat Openldap Vulnerabilities [RHSA-2003:040-07] February 7, 2003 14:00 GMT Number N-043 [REVISED 27 Oct 2003] ______________________________________________________________________________ PROBLEM: Several vulnerabilities have been identified in openLDAP, a suite of LDAP (Lightweight Directory Access Protocol) applications and development tools. These vulnerabilites could lead to local and remote buffer overflows. PLATFORM: 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 Red Hat Linux 8.0 Red Hat Enterprise Linux products DAMAGE: The overflow vulnerabilities could allow remote attackers to execute arbitrary code. SOLUTION: Apply correct updated packages, reference list in the advisory. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. Red Hat Linux advises users who use LDAP to ASSESSMENT: install the updated openldap packages which are not vulnerable to these issues. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/n-043.shtml ORIGINAL BULLETIN: https://rhn.redhat.com/errata/RHSA-2003-040.html ADDITIONAL LINKS: https://rhn.redhat.com/errata/RHSA-2002-312.html ______________________________________________________________________________ REVISION HISTORY: 10-27-03 - Added additional link for Red Hat Advisory RHSA2003:312 for their patches to their Red Hat Enterprise Linux products. [***** Start RHSA-2003:040-07 *****] Updated openldap packages available Advisory: RHSA-2003:040-07 Last updated on: 2003-02-05 Affected Products: 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 Red Hat Linux 8.0 CVEs (cve.mitre.org): CAN-2002-1378 CAN-2002-1379 Security Advisory Details: Updated openldap packages are available which fix a number of local and remote buffer overflows in libldap and the slapd and slurpd servers, and potential issues stemming from using user-specified LDAP configuration files. OpenLDAP is a suite of LDAP (Lightweight Directory Access Protocol) applications and development tools. LDAP is a set of protocols for accessing directory services. In an audit of OpenLDAP by SuSE, a number of potential security issues were found: When reading configuration files, libldap would read the current user's .ldaprc file even in applications being run with elevated privileges. Slurpd would overflow an internal buffer if the command-line argument used with the -t or -r flags was too long, or if the name of a file for which it attempted to create an advisory lock was too long. When parsing filters, the getfilter family of functions from libldap could be made to overflow an internal buffer by supplying a carefully crafted ldapfilter.conf file. When processing LDAP entry display templates, libldap could be made to overflow an internal buffer by supplying a properly crafted ldaptemplates.conf file. When parsing an access control list, slapd could be made to overflow an internal buffer. When constructing the name of the file used for logging rejected replication requests, slapd would overflow an internal buffer if the size of the generated name was too large, and could be tricked into destroying the contents of any file owned by the ldap user due to a race condition in the subsequent creation of the log file. Red Hat Linux users who use LDAP are advised to install the updated openldap packages which are not vulnerable to these issues. Updated packages: Red Hat Linux 6.2 -------------------------------------------------------------------------------- SRPMS: openldap-1.2.13-2.src.rpm [ via FTP ] [ via HTTP ] 6abc37d341ed1998e0e37a5c8ae2b292 i386: openldap-1.2.13-2.i386.rpm [ via FTP ] [ via HTTP ] 2d6741aa454a4bf6ad39447e30136b05 openldap-clients-1.2.13-2.i386.rpm [ via FTP ] [ via HTTP ] c5d39f85114ba91e94fe270c2b04a12e openldap-devel-1.2.13-2.i386.rpm [ via FTP ] [ via HTTP ] 1ae2c495fb0dd934ac51365c0b6cb098 openldap-servers-1.2.13-2.i386.rpm [ via FTP ] [ via HTTP ] e3c1cffb180a025811cf6a97d95c7e33 Red Hat Linux 7.0 -------------------------------------------------------------------------------- SRPMS: openldap-2.0.27-2.7.1.src.rpm [ via FTP ] [ via HTTP ] edde5757c10e2f51a371f457cb3d4bee openldap12-1.2.13-8.src.rpm [ via FTP ] [ via HTTP ] 92d8d3db8064d35faab46b59c077251d i386: openldap-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] a44a25cea2e81cb296d2aad1351a750d openldap-clients-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 48b8097de61282171ecb2740116ea63f openldap-devel-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 23f437d646397bebed28fad5b733ee8f openldap-servers-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 94e6f4fc6851055fa3a224ea30b693a5 openldap12-1.2.13-8.i386.rpm [ via FTP ] [ via HTTP ] 0a692fe198ed8743ede8e6dbf999e486 Red Hat Linux 7.1 -------------------------------------------------------------------------------- SRPMS: openldap-2.0.27-2.7.1.src.rpm [ via FTP ] [ via HTTP ] edde5757c10e2f51a371f457cb3d4bee openldap12-1.2.13-8.src.rpm [ via FTP ] [ via HTTP ] 92d8d3db8064d35faab46b59c077251d i386: openldap-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] a44a25cea2e81cb296d2aad1351a750d openldap-clients-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 48b8097de61282171ecb2740116ea63f openldap-devel-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 23f437d646397bebed28fad5b733ee8f openldap-servers-2.0.27-2.7.1.i386.rpm [ via FTP ] [ via HTTP ] 94e6f4fc6851055fa3a224ea30b693a5 openldap12-1.2.13-8.i386.rpm [ via FTP ] [ via HTTP ] 0a692fe198ed8743ede8e6dbf999e486 Red Hat Linux 7.2 -------------------------------------------------------------------------------- SRPMS: openldap-2.0.27-2.7.3.src.rpm [ via FTP ] [ via HTTP ] 148ac6c282678e649d9bc82ef68472ec openldap12-1.2.13-8.src.rpm [ via FTP ] [ via HTTP ] 92d8d3db8064d35faab46b59c077251d i386: openldap-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 878a1302654284097cd6b1ff37dcb990 openldap-clients-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 42bdf5437712c8b7240cdb6dee4ec8c1 openldap-devel-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 4fedaaa2c3bae85580d80b981af12194 openldap-servers-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 9341c678193d6f6dda7c9718df75d614 openldap12-1.2.13-8.i386.rpm [ via FTP ] [ via HTTP ] 0a692fe198ed8743ede8e6dbf999e486 ia64: openldap-2.0.27-2.7.3.ia64.rpm [ via FTP ] [ via HTTP ] 518f368e458a617daa37baefb331fa09 openldap-clients-2.0.27-2.7.3.ia64.rpm [ via FTP ] [ via HTTP ] c5b77b9c6a01f72f13438d058ec05cb9 openldap-devel-2.0.27-2.7.3.ia64.rpm [ via FTP ] [ via HTTP ] 55e81b9cb1e2ae1a44ceb833470087ee openldap-servers-2.0.27-2.7.3.ia64.rpm [ via FTP ] [ via HTTP ] 5c6dd70a327ced63f143eee0587e9439 openldap12-1.2.13-8.ia64.rpm [ via FTP ] [ via HTTP ] fccda5abf8c02f80a5713438854ccb39 Red Hat Linux 7.3 -------------------------------------------------------------------------------- SRPMS: openldap-2.0.27-2.7.3.src.rpm [ via FTP ] [ via HTTP ] 148ac6c282678e649d9bc82ef68472ec openldap12-1.2.13-8.src.rpm [ via FTP ] [ via HTTP ] 92d8d3db8064d35faab46b59c077251d i386: openldap-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 878a1302654284097cd6b1ff37dcb990 openldap-clients-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 42bdf5437712c8b7240cdb6dee4ec8c1 openldap-devel-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 4fedaaa2c3bae85580d80b981af12194 openldap-servers-2.0.27-2.7.3.i386.rpm [ via FTP ] [ via HTTP ] 9341c678193d6f6dda7c9718df75d614 openldap12-1.2.13-8.i386.rpm [ via FTP ] [ via HTTP ] 0a692fe198ed8743ede8e6dbf999e486 Red Hat Linux 8.0 -------------------------------------------------------------------------------- SRPMS: openldap-2.0.27-2.8.0.src.rpm [ via FTP ] [ via HTTP ] cb6f6d639ff823cc016725dab752aacd openldap12-1.2.13-9.src.rpm [ via FTP ] [ via HTTP ] 2ba981c5834886ca93ce492ea8c87848 i386: openldap-2.0.27-2.8.0.i386.rpm [ via FTP ] [ via HTTP ] f6ffab19ae521c65396cc76d0a64c2c9 openldap-clients-2.0.27-2.8.0.i386.rpm [ via FTP ] [ via HTTP ] 3e12f7f0aacca920d60fc39766b7d3e5 openldap-devel-2.0.27-2.8.0.i386.rpm [ via FTP ] [ via HTTP ] 351bd4cea012a1517ded0c03a4512c48 openldap-servers-2.0.27-2.8.0.i386.rpm [ via FTP ] [ via HTTP ] a5b8e07d9f13a98aaf1bf999d6672efc openldap12-1.2.13-9.i386.rpm [ via FTP ] [ via HTTP ] 0e5cbc3c9eb9136169caefed4dadd7c6 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. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1378 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1379 Keywords: .ldaprc, buffer, openldap, overflow, setuid -------------------------------------------------------------------------------- The listed packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/solutions/security/news/publickey.html#key You can verify each package and see who signed it with the following command: rpm --checksig -v 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: md5sum filename Note that you need RPM >= 3.0 to check GnuPG keys. The Red Hat security contact is security@redhat.com. More contact details at http://www.redhat.com/solutions/security/news/contact.html [***** End RHSA-2003:040-07 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Red Hat for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. 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