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Red Hat Linux 8.0: RHSA-2003:011-07 High Severity: DHCP Buffer Overflow

Several potential stack overflow vulnerabilities affect the ISC DHCPD server.. ` --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated dhcp packages fix security vulnerabilities Advisory ID: RHSA-2003:011-07 Issue date: 2003-01-16 Updated on: 2003-01-16 Product: Red Hat Linux Keywords: Cross references: Obsoletes: CVE Names: CAN-2003-0026 --------------------------------------------------------------------- 1. Topic: Several potential stack overflow vulnerabilities affect the ISC DHCPD server. This advisory provides fixed packages for Red Hat Linux 8.0. 2. Relevant releases/architectures: Red Hat Linux 8.0 - i386 3. Problem description: The dhcp package provides the ISC Dynamic Host Configuration Protocol (DHCP) server and relay agent. DHCP is a protocol which allows devices to get their own network configuration information from a server. The Internet Software Consortium has detected several potential vulnerabilities during an audit of the ISC DHCP server. These vulnerabilities affect the minires library and may be exploitable as stack buffer overflows, which could lead to remote code execution. Red Hat Linux 8.0 shipped with a version of DHCP that is vulnerable to these issues. All users of DHCP are advised to upgrade to the erratum packages which contain a backported patch to correct this issue. Other versions of Red Hat Linux and Red Hat Linux Advanced Server are based on version 2 of DHCP, and are therefore 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 willnot 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. RPMs required: Red Hat Linux 8.0: SRPMS: i386: 6. Verification: MD5 sum Package Name -------------------------------------------------------------------------- d537f38e1eec76d7fded1fe5f210605f 8.0/en/os/SRPMS/dhcp-3.0pl1-15.src.rpm 659f4a397553c84f5f255c042c0dc779 8.0/en/os/i386/dhclient-3.0pl1-15.i386.rpm dc3205abc0f942b165a49389dc4027d5 8.0/en/os/i386/dhcp-3.0pl1-15.i386.rpm 8a2ec44f9b0e208aa4c4c9683d2e9034 8.0/en/os/i386/dhcp-devel-3.0pl1-15.i386.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at About You can verify each package with the following command: rpm --checksig -v 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 7. References: 2003 CERT Advisories CVE -CVE-2003-0026 8. Contact: The Red Hat security contact is . More contact details at All Red Hat products Copyright 2003 Red Hat, Inc. _______________________________________________ Red Hat-watch-list mailing list To unsubscribe, visit: `. Acquire crucial updates for Red Hat's DHCP application to mitigate risks associated with vulnerabilities that may enable remote code execution through buffer overflow attacks.. Red Hat Linux,DHCP packages,buffer overflows,security update. . Severity: Critical. LinuxSecurity.com Team

Jan 16, 2003 •Critical Red Hat