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The kernel package version 2.4.20-6 has a security hole in ptrace. Using USB CD-ROMs on some ServerWorks systems can hang older versions of the kernel.. ` --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Updated 2.4 kernel fixes USB storage Advisory ID: RHSA-2003:135-00 Issue date: 2003-04-08 Updated on: 2003-04-08 Product: Red Hat Linux Keywords: ptrace usb storage cdrom bind netdump Cross references: RHSA-2003-098 Obsoletes: CVE Names: CAN-2003-0127 --------------------------------------------------------------------- 1. Topic: Updated kernel packages for Red Hat Linux 9 are now available. The kernel package version 2.4.20-6 has a security hole in ptrace. Using USB CD-ROMs on some ServerWorks systems can hang older versions of the kernel. 2. Relevant releases/architectures: Red Hat Linux 9 - athlon, i386, i586, i686 3. Problem description: The Linux kernel handles the basic functions of the operating system. A vulnerability in ptrace handling has been found in version 2.4.20-6 of the kernel. This vulnerability makes it possible for local users to gain elevated (root) privileges without authorization. This vulnerability is fixed in kernel-2.4.20-8 and kernel-2.4.20-9. Please note this vulnerability only affects Red Hat Linux 9 boxed sets manufactured for distribution within the United States. The part numbers, which can be found on the bottom flap of the box, are RHF0120US and RHF0121US. Copies of Red Hat Linux 9 obtained through other means (such as from Red Hat Network, FTP, or international boxed sets) already contain kernel-2.4.20-8 and are therefore not vulnerable to this issue. An NPTL support defect in the kernel causes bind not to restart on uniprocessor systems; this bug has been fixed in kernel-2.4.20-9. USB mass storage devices (in particular, USB CD-ROMs) and the ohci driver sometimes causes system hangs; this defect has beenfixed. Additionally, support for the tg3, e100, and e1000 drivers has been added. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To use Red Hat Network to upgrade the kernel, 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. Note that you need to select the kernel explicitly if you are using the default configuration of up2date. To install kernel packages manually, use "rpm -ivh " and modify system settings to boot the kernel you have installed. To do this, edit /boot/grub/grub.conf and change the default entry to "default=0" (or, if you have chosen to use LILO as your boot loader, edit /etc/lilo.conf and run lilo) Do not use "rpm -Uvh" as that will remove your running kernel binaries from your system. You may use "rpm -e" to remove old kernels after determining that the new kernel functions properly on your system. 5. RPMs required: Red Hat Linux 9: SRPMS: athlon: i386: i586: i686: 6. Verification: MD5 sum Package Name -------------------------------------------------------------------------- 907a4a6ccd687be8cdb4c38b66d10e67 9/en/os/SRPMS/kernel-2.4.20-9.src.rpm 3cf6f66ef44bd670cacf4768b20f503c 9/en/os/athlon/kernel-2.4.20-9.athlon.rpm 984d637b03b999ec8d09d778acc06c04 9/en/os/athlon/kernel-smp-2.4.20-9.athlon.rpm 18d0088eae5b5f2daf2f3a955f0812e3 9/en/os/i386/kernel-BOOT-2.4.20-9.i386.rpm b987cbd4bbec07a65ca882e8276f7d96 9/en/os/i386/kernel-doc-2.4.20-9.i386.rpm 153b636ac64f7f52e62f1fba47b0ccf7 9/en/os/i386/kernel-source-2.4.20-9.i386.rpm 7aed26e3c4393f433255e3aa4d0bb409 9/en/os/i586/kernel-2.4.20-9.i586.rpm c78a4bb56e6acf96375ebb4a646f6826 9/en/os/i686/kernel-2.4.20-9.i686.rpm 0b9ce410c8a3e7639b8a2e82a53abf0e 9/en/os/i686/kernel-bigmem-2.4.20-9.i686.rpm 3ad01acbf3504ef601518e0489d5ce3f9/en/os/i686/kernel-smp-2.4.20-9.i686.rpm These packages are GPG signed by Red Hat for security. Our key is available at All Red Hat products 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: CVE -CVE-2003-0127 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: `. Patch fixes ptrace exploit in Red Hat Linux kernel 2.4.20-6, enhancing system security and USB reliability.. RedHat Linux Security, ptrace Exploit, Kernel Vulnerability Response. . Severity: Critical. LinuxSecurity.com Team
The kernel module loader in Linux 2.2 and Linux 2.4 kernels has a flaw in ptrace.. - -------------------------------------------------------------------------- Debian Security Advisory DSA 276-1
The Linux 2.2 and Linux 2.4 kernels have a flaw in ptrace. This hole allows local users to obtain full privileges.. - - --------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT 200303-17 - - --------------------------------------------------------------------- PACKAGE : kernel SUMMARY : ptrace flaw DATE : 2003-03-21 08:59 UTC EXPLOIT : local VERSIONS AFFECTED : All except 2.5 FIXED VERSION : Kernels with patch applied CVE : CAN-2003-0127 - - --------------------------------------------------------------------- - From advisory: "The Linux 2.2 and Linux 2.4 kernels have a flaw in ptrace. This hole allows local users to obtain full privileges. Remote exploitation of this hole is not possible. Linux 2.5 is not believed to be vulnerable." Read the full advisory at: http://marc.theaimsgroup.com/?l=linux-kernel&m=104791735604202&w=2 SOLUTION It is recommended that all Gentoo Linux users upgrade their kernels. If you are running any of gentoo-sources, gs-sources, pfeifer-sources sparc-sources or xfs-sources updates are available. Sync your tree and run emerge to install the latest version of the package. Then compile and install your new kernel and reboot. If you are using an other kernel package which hasn't been updated or download your own sources you can download a patch from /linux-2.4.20-ptrace.patch and manually patch your kernel. - - ---------------------------------------------------------------------
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