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Red Hat 5 RHSA-2023:0456-01 Critical: Sudo Access Vulnerability

An updated sudo package that fixes two security issues is now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team.. ==================================================================== Red Hat Security Advisory Synopsis: Important: sudo security update Advisory ID: RHSA-2010:0122-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2010:0122.html Issue date: 2010-02-26 CVE Names: CVE-2010-0426 CVE-2010-0427 ==================================================================== 1. Summary: An updated sudo package that fixes two security issues is now available for Red Hat Enterprise Linux 5. This update has been rated as having important security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The sudo (superuser do) utility allows system administrators to give certain users the ability to run commands as root. A privilege escalation flaw was found in the way sudo handled the sudoedit pseudo-command. If a local user were authorized by the sudoers file to use this pseudo-command, they could possibly leverage this flaw to execute arbitrary code with the privileges of the root user. (CVE-2010-0426) The sudo utility did not properly initialize supplementary groups when the "runas_default" option (in the sudoers file) was used. If a local user were authorized by the sudoers file to perform their sudo commands under the account specified with "runas_default", they would receive the root user's supplementary groups instead of those of the intended target user, giving them unintended privileges. (CVE-2010-0427) Users of sudo should upgrade to this updated package, which contains backported patches tocorrect these issues. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at 5. Bugs fixed (http://bugzilla.redhat.com/): 567337 - CVE-2010-0426 sudo: sudoedit option can possibly allow for arbitrary code execution 567622 - CVE-2010-0427 sudo: Fails to reset group permissions if runas_default set 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: i386: sudo-1.6.9p17-6.el5_4.i386.rpm sudo-debuginfo-1.6.9p17-6.el5_4.i386.rpm x86_64: sudo-1.6.9p17-6.el5_4.x86_64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: i386: sudo-1.6.9p17-6.el5_4.i386.rpm sudo-debuginfo-1.6.9p17-6.el5_4.i386.rpm ia64: sudo-1.6.9p17-6.el5_4.ia64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.ia64.rpm ppc: sudo-1.6.9p17-6.el5_4.ppc.rpm sudo-debuginfo-1.6.9p17-6.el5_4.ppc.rpm s390x: sudo-1.6.9p17-6.el5_4.s390x.rpm sudo-debuginfo-1.6.9p17-6.el5_4.s390x.rpm x86_64: sudo-1.6.9p17-6.el5_4.x86_64.rpm sudo-debuginfo-1.6.9p17-6.el5_4.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://access.redhat.com/security/team/key#package 7. References: https://access.redhat.com/security/cve/CVE-2010-0426 https://access.redhat.com/security/cve/CVE-2010-0427 https://access.redhat.com/security/updates/classification#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact Copyright 2010 Red Hat, Inc. . Ubuntu's critical update for OpenSSL tackles major vulnerabilities in version 1.1, reinforcing data encryption integrity.. Red Hat Updates, Sudo Fixes, Privilege Escalation Issues. . Severity: Important. LinuxSecurity.com Team

Feb 26, 2010 •Important Red Hat