news 28 Posted July 14, 2009 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: dhcp security update Advisory ID: RHSA-2009:1154-02 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2009-1154.html Issue date: 2009-07-14 CVE Names: CVE-2009-0692 CVE-2009-1893 ===================================================================== 1. Summary: Updated dhcp packages that fix two security issues are now available for Red Hat Enterprise Linux 3. This update has been rated as having critical security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux AS version 3 - i386, ia64, ppc, s390, s390x, x86_64 Red Hat Desktop version 3 - i386, x86_64 Red Hat Enterprise Linux ES version 3 - i386, ia64, x86_64 Red Hat Enterprise Linux WS version 3 - i386, ia64, x86_64 3. Description: The Dynamic Host Configuration Protocol (DHCP) is a protocol that allows individual devices on an IP network to get their own network configuration information, including an IP address, a subnet mask, and a broadcast address. The Mandriva Linux Engineering Team discovered a stack-based buffer overflow flaw in the ISC DHCP client. If the DHCP client were to receive a malicious DHCP response, it could crash or execute arbitrary code with the permissions of the client (root). (CVE-2009-0692) An insecure temporary file use flaw was discovered in the DHCP daemon's init script ("/etc/init.d/dhcpd"). A local attacker could use this flaw to overwrite an arbitrary file with the output of the "dhcpd -t" command via a symbolic link attack, if a system administrator executed the DHCP init script with the "configtest", "restart", or "reload" option. (CVE-2009-1893) Users of DHCP should upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 507717 - CVE-2009-0692 dhclient: stack overflow leads to arbitrary code execution as root 510024 - CVE-2009-1893 dhcp: insecure temporary file use in the dhcpd init script 6. Package List: Red Hat Enterprise Linux AS version 3: Source: ftp://updates.redhat.com/enterprise/3AS/en/os/SRPMS/dhcp-3.0.1-10.2_EL3.src.rpm i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm ppc: dhclient-3.0.1-10.2_EL3.ppc.rpm dhcp-3.0.1-10.2_EL3.ppc.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ppc.rpm dhcp-devel-3.0.1-10.2_EL3.ppc.rpm s390: dhclient-3.0.1-10.2_EL3.s390.rpm dhcp-3.0.1-10.2_EL3.s390.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390.rpm dhcp-devel-3.0.1-10.2_EL3.s390.rpm s390x: dhclient-3.0.1-10.2_EL3.s390x.rpm dhcp-3.0.1-10.2_EL3.s390x.rpm dhcp-debuginfo-3.0.1-10.2_EL3.s390x.rpm dhcp-devel-3.0.1-10.2_EL3.s390x.rpm x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm Red Hat Desktop version 3: Source: ftp://updates.redhat.com/enterprise/3desktop/en/os/SRPMS/dhcp-3.0.1-10.2_EL3.src.rpm i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm Red Hat Enterprise Linux ES version 3: Source: ftp://updates.redhat.com/enterprise/3ES/en/os/SRPMS/dhcp-3.0.1-10.2_EL3.src.rpm i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm Red Hat Enterprise Linux WS version 3: Source: ftp://updates.redhat.com/enterprise/3WS/en/os/SRPMS/dhcp-3.0.1-10.2_EL3.src.rpm i386: dhclient-3.0.1-10.2_EL3.i386.rpm dhcp-3.0.1-10.2_EL3.i386.rpm dhcp-debuginfo-3.0.1-10.2_EL3.i386.rpm dhcp-devel-3.0.1-10.2_EL3.i386.rpm ia64: dhclient-3.0.1-10.2_EL3.ia64.rpm dhcp-3.0.1-10.2_EL3.ia64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.ia64.rpm dhcp-devel-3.0.1-10.2_EL3.ia64.rpm x86_64: dhclient-3.0.1-10.2_EL3.x86_64.rpm dhcp-3.0.1-10.2_EL3.x86_64.rpm dhcp-debuginfo-3.0.1-10.2_EL3.x86_64.rpm dhcp-devel-3.0.1-10.2_EL3.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-0692 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1893 http://www.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is . More contact details at https://www.redhat.com/security/team/contact/ Copyright 2009 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFKXOD3XlSAg2UNWIIRAqd7AJ9zGRO76iKVh7QDbCvHQSrD+cllPwCeOvNw +duGG9sBrF2MUuGkUehbbN8= =fCiq -----END PGP SIGNATURE----- -- Share this post Link to post
