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Red Hat 7.0: RHSA-2002:020-05 Critical: Ncurses4 Buffer Overflow

A problem has been found in ncurses version 5.0 that could cause a bufferoverflow. This overflow could be locally exploited if the library islinked into a program that runs setuid or setgid.. ` --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated ncurses4 compat packages are available Advisory ID: RHSA-2002:020-05 Issue date: 2002-01-29 Updated on: 2002-02-19 Product: Red Hat Linux Keywords: ncurses4 buffer overrun overflow ncurses5 Cross references: Obsoletes: --------------------------------------------------------------------- 1. Topic: Updated ncurses4 compatability packages which fix a potential security problem are available. 2. Relevant releases/architectures: Red Hat Linux 7.0 - alpha, i386 Red Hat Linux 7.1 - alpha, i386 Red Hat Linux 7.2 - i386 3. Problem description: The ncurses library provides a terminal-independent method of screen handling. A problem has been found in ncurses version 5.0 that could cause a buffer overflow. This overflow could be locally exploited if the library is linked into a program that runs setuid or setgid. Red Hat Linux ships with a compatibility package 'ncurses4' that is actually based on ncurses version 5.0 but has been made ABI compatible with ncurses 4. No programs that ship with Red Hat Linux are exploitable. A program could only be exploited if it uses the ncurses 4 compatiblity package and if it is run setuid or setgid. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0062 to this issue. Thanks to Daniel Jacobowitz at MontaVista Software for alerting us 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. Onlythose 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 ( for more info): 6. RPMs required: Red Hat Linux 7.0: SRPMS: alpha: i386: Red Hat Linux 7.1: SRPMS: alpha: i386: Red Hat Linux 7.2: SRPMS: i386: 7. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 53856e0c3219de2fcb4e56600b4eb3b9 7.0/en/os/SRPMS/ncurses4-5.0-5.src.rpm b470c5cf9eaaa4710a09e114aced3f4d 7.0/en/os/alpha/ncurses4-5.0-5.alpha.rpm b5ad8bc36c129534192e0dbce582f5ed 7.0/en/os/i386/ncurses4-5.0-5.i386.rpm 53856e0c3219de2fcb4e56600b4eb3b9 7.1/en/os/SRPMS/ncurses4-5.0-5.src.rpm b470c5cf9eaaa4710a09e114aced3f4d 7.1/en/os/alpha/ncurses4-5.0-5.alpha.rpm b5ad8bc36c129534192e0dbce582f5ed 7.1/en/os/i386/ncurses4-5.0-5.i386.rpm 53856e0c3219de2fcb4e56600b4eb3b9 7.2/en/os/SRPMS/ncurses4-5.0-5.src.rpm b5ad8bc36c129534192e0dbce582f5ed 7.2/en/os/i386/ncurses4-5.0-5.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 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 8. References: CVE -CVE-2002-0062 Copyright(c) 2000, 2001 Red Hat, Inc. `. Red Hat Security Advisory detailing issues within ncurses5 pertinent to memorycorruption risks, along with essential patches for environments utilizing Red Hat Linux.. ncurses Update, Red Hat Advisory, Critical Buffer Overflow. . Severity: Critical. LinuxSecurity.com Team

Feb 21, 2002 •Critical Red Hat