-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: sudo security, bug fix, and enhancement update Advisory ID: RHSA-2015:1409-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2015-1409.html Issue date: 2015-07-22 Updated on: 2015-03-04 CVE Names: CVE-2014-9680 ===================================================================== 1. Summary: Updated sudo packages that fix one security issue, three bugs, and add one enhancement are now available for Red Hat Enterprise Linux 6. Red Hat Product Security has rated this update as having Moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Desktop Optional (v. 6) - i386, x86_64 Red Hat Enterprise Linux HPC Node (v. 6) - x86_64 Red Hat Enterprise Linux HPC Node Optional (v. 6) - x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 Red Hat Enterprise Linux Workstation Optional (v. 6) - i386, x86_64 3. Description: The sudo packages contain the sudo utility which allows system administrators to provide certain users with the permission to execute privileged commands, which are used for system management purposes, without having to log in as root. It was discovered that sudo did not perform any checks of the TZ environment variable value. If sudo was configured to preserve the TZ environment variable, a local user with privileges to execute commands via sudo could possibly use this flaw to achieve system state changes not permitted by the configured commands. (CVE-2014-9680) Note: The default sudoers configuration in Red Hat Enterprise Linux removes the TZ variable from the environment in which commands run by sudo are executed. This update also fixes the following bugs: * Previously, the sudo utility child processes could sometimes become unresponsive because they ignored the SIGPIPE signal. With this update, SIGPIPE handler is properly restored in the function that reads passwords from the user, and the child processes no longer ignore SIGPIPE. As a result, sudo child processes do not hang in this situation. (BZ#1094548) * Prior to this update, the order in which sudo rules were processed did not honor the user-defined sudoOrder attribute. Consequently, sudo rules were processed in an undefined order even when the user defined the order in sudoOrder. The implementation of SSSD support in sudo has been modified to sort the rules according to the sudoOrder value, and sudo rules are now sorted in the order defined by the user in sudoOrder. (BZ#1138581) * Previously, sudo became unresponsive after the user issued a command when a sudoers source was mentioned multiple times in the /etc/nsswitch.conf file. The problem occurred when nsswitch.conf contained, for example, the "sudoers: files sss sss" entry. The sudoers source processing code has been fixed to correctly handle multiple instances of the same sudoers source. As a result, sudo no longer hangs when a sudoers source is mentioned multiple times in /etc/nsswitch.conf. (BZ#1147498) In addition, this update adds the following enhancement: * The sudo utility now supports I/O logs compressed using the zlib library. With this update, sudo can generate zlib compressed I/O logs and also process zlib compressed I/O logs generated by other versions of sudo with zlib support. (BZ#1106433) All sudo users are advised to upgrade to these updated packages, which contain backported patches to correct these issues and add this enhancement. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1138267 - sudoers.ldap man page has typos in description 1138581 - sudo with sssd doesn't work correctly with sudoOrder option 1142122 - sudo option mail_no_user doesn't work 1144448 - sudo with ldap doesn't work correctly with 'listpw=all' and 'verifypw=all' in sudoOption entry 1147498 - duplicate sss module in nsswitch breaks sudo 1191144 - CVE-2014-9680 sudo: unsafe handling of TZ environment variable 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: sudo-1.8.6p3-19.el6.src.rpm i386: sudo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.i686.rpm x86_64: sudo-1.8.6p3-19.el6.x86_64.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux Desktop Optional (v. 6): i386: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm x86_64: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node (v. 6): Source: sudo-1.8.6p3-19.el6.src.rpm x86_64: sudo-1.8.6p3-19.el6.x86_64.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux HPC Node Optional (v. 6): x86_64: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux Server (v. 6): Source: sudo-1.8.6p3-19.el6.src.rpm i386: sudo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.i686.rpm ppc64: sudo-1.8.6p3-19.el6.ppc64.rpm sudo-debuginfo-1.8.6p3-19.el6.ppc64.rpm s390x: sudo-1.8.6p3-19.el6.s390x.rpm sudo-debuginfo-1.8.6p3-19.el6.s390x.rpm x86_64: sudo-1.8.6p3-19.el6.x86_64.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): i386: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm ppc64: sudo-debuginfo-1.8.6p3-19.el6.ppc.rpm sudo-debuginfo-1.8.6p3-19.el6.ppc64.rpm sudo-devel-1.8.6p3-19.el6.ppc.rpm sudo-devel-1.8.6p3-19.el6.ppc64.rpm s390x: sudo-debuginfo-1.8.6p3-19.el6.s390.rpm sudo-debuginfo-1.8.6p3-19.el6.s390x.rpm sudo-devel-1.8.6p3-19.el6.s390.rpm sudo-devel-1.8.6p3-19.el6.s390x.rpm x86_64: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: sudo-1.8.6p3-19.el6.src.rpm i386: sudo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.i686.rpm x86_64: sudo-1.8.6p3-19.el6.x86_64.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 6): i386: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm x86_64: sudo-debuginfo-1.8.6p3-19.el6.i686.rpm sudo-debuginfo-1.8.6p3-19.el6.x86_64.rpm sudo-devel-1.8.6p3-19.el6.i686.rpm sudo-devel-1.8.6p3-19.el6.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/ 7. References: https://access.redhat.com/security/cve/CVE-2014-9680 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFVrzZIXlSAg2UNWIIRAkA6AKC6ey0k/O5Uup2y+xyQV0lxjT11+QCeNslJ r7MCDUkZh+ton7kfp3316bo= =XG/2 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce