__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN auth_ldap Security Update [RHSA-2006:0179-7] January 10, 2006 22:00 GMT Number Q-094 [REVISED 23 Jan 2006] ______________________________________________________________________________ PROBLEM: A format string flaw was found in the way auth_ldap logs information. PLATFORM: Red Hat Enterprise Linux AS (v. 2.1) Red Hat Enterprise Linux ES (v. 2.1) Red Hat Enterprise Linux WS (v. 2.1) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor Debian GNU/Linux 3.0 alias woody DAMAGE: It may be possible for a remote attacker to execute arbitrary code as the 'apache' user if auth_ldap is used for user authentication. SOLUTION: Apply current patches. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A remote attacker could execute arbitrary ASSESSMENT: code. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-094.shtml ORIGINAL BULLETIN: https://rhn.redhat.com/errata/RHSA-2006-0179.html ADDITIONAL LINK: http://www.debian.org/security/2006/dsa-952 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2006-0150 ______________________________________________________________________________ REVISION HISTORY: 01/23/2006 - revised to add a link to Debian Security Advisory DSA-952-1 for Debian GNU/Linux 3.0 alias woody. [***** Start RHSA-2006:0179-7 *****] Critical: auth_ldap security update Advisory: RHSA-2006:0179-7 Type: Security Advisory Issued on: 2006-01-10 Last updated on: 2006-01-10 Affected Products: Red Hat Enterprise Linux AS (v. 2.1) Red Hat Enterprise Linux ES (v. 2.1) Red Hat Enterprise Linux WS (v. 2.1) Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor CVEs (cve.mitre.org): CVE-2006-0150 Details An updated auth_ldap packages that fixes a format string security issue is now available for Red Hat Enterprise Linux 2.1. This update has been rated as having critical security impact by the Red Hat Security Response Team. The auth_ldap package is an httpd module that allows user authentication against information stored in an LDAP database. A format string flaw was found in the way auth_ldap logs information. It may be possible for a remote attacker to execute arbitrary code as the 'apache' user if auth_ldap is used for user authentication. The Common Vulnerabilities and Exposures project assigned the name CVE-2006-0150 to this issue. Note that this issue only affects servers that have auth_ldap installed and configured to perform user authentication against an LDAP database. All users of auth_ldap should upgrade to this updated package, which contains a backported patch to resolve this issue. This issue does not affect the Red Hat Enterprise Linux 3 or 4 distributions as they do not include the auth_ldap package. Solution Before applying this update, make sure all previously released errata relevant to your system have been applied. This update is available via Red Hat Network. 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. Updated packages Red Hat Enterprise Linux AS (v. 2.1) SRPMS: auth_ldap-1.4.8-3.1.src.rpm b386cc76da4f4dbbcafc5e0200567b76 IA-32: auth_ldap-1.4.8-3.1.i386.rpm 569bce40fcb6cc7cefa9179d949fb192 IA-64: auth_ldap-1.4.8-3.1.ia64.rpm 56aea79641ddb17dc98d26b6f20dd439 Red Hat Enterprise Linux ES (v. 2.1) SRPMS: auth_ldap-1.4.8-3.1.src.rpm b386cc76da4f4dbbcafc5e0200567b76 IA-32: auth_ldap-1.4.8-3.1.i386.rpm 569bce40fcb6cc7cefa9179d949fb192 Red Hat Enterprise Linux WS (v. 2.1) SRPMS: auth_ldap-1.4.8-3.1.src.rpm b386cc76da4f4dbbcafc5e0200567b76 IA-32: auth_ldap-1.4.8-3.1.i386.rpm 569bce40fcb6cc7cefa9179d949fb192 Red Hat Linux Advanced Workstation 2.1 for the Itanium Processor SRPMS: auth_ldap-1.4.8-3.1.src.rpm b386cc76da4f4dbbcafc5e0200567b76 IA-64: auth_ldap-1.4.8-3.1.ia64.rpm 56aea79641ddb17dc98d26b6f20dd439 (The unlinked packages above are only available from the Red Hat Network) Bugs fixed (see bugzilla for more information) 177421 - CVE-2006-0150 auth_ldap format string issue References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-0150 [***** End RHSA-2006:0179-7 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of RedHat 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. 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