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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2016.2617 Low: sudo security, bug fix, and enhancement update 7 November 2016 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: sudo Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2016-7091 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2016-2593.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: sudo security, bug fix, and enhancement update Advisory ID: RHSA-2016:2593-02 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2016-2593.html Issue date: 2016-11-03 CVE Names: CVE-2016-7091 ===================================================================== 1. Summary: An update for sudo is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - 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. Security Fix(es): * It was discovered that the default sudo configuration preserved the value of INPUTRC from the user's environment, which could lead to information disclosure. A local user with sudo access to a restricted program that uses readline could use this flaw to read content from specially formatted files with elevated privileges provided by sudo. (CVE-2016-7091) Note: With this update, INPUTRC was removed from the env_keep list in /etc/sudoers to avoid having sudo preserve the value of this variable when invoking privileged commands. Red Hat would like to thank Grisha Levit for reporting this issue. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.3 Release Notes linked from the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1196451 - default requiretty is problematic and breaks valid usage 1261998 - visudo accept non valid content 1268958 - sudo - cmnd_no_wait can cause child processes to ignore SIGPIPE 1334360 - sudo option mail_no_user doesn't work 1339935 - CVE-2016-7091 sudo: Possible info leak via INPUTRC 1350828 - [RHEL7] visudo ignores -q flag 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: sudo-1.8.6p7-20.el7.src.rpm x86_64: sudo-1.8.6p7-20.el7.x86_64.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux Client Optional (v. 7): x86_64: sudo-debuginfo-1.8.6p7-20.el7.i686.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm sudo-devel-1.8.6p7-20.el7.i686.rpm sudo-devel-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: sudo-1.8.6p7-20.el7.src.rpm x86_64: sudo-1.8.6p7-20.el7.x86_64.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode Optional (v. 7): x86_64: sudo-debuginfo-1.8.6p7-20.el7.i686.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm sudo-devel-1.8.6p7-20.el7.i686.rpm sudo-devel-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: sudo-1.8.6p7-20.el7.src.rpm aarch64: sudo-1.8.6p7-20.el7.aarch64.rpm sudo-debuginfo-1.8.6p7-20.el7.aarch64.rpm ppc64: sudo-1.8.6p7-20.el7.ppc64.rpm sudo-debuginfo-1.8.6p7-20.el7.ppc64.rpm ppc64le: sudo-1.8.6p7-20.el7.ppc64le.rpm sudo-debuginfo-1.8.6p7-20.el7.ppc64le.rpm s390x: sudo-1.8.6p7-20.el7.s390x.rpm sudo-debuginfo-1.8.6p7-20.el7.s390x.rpm x86_64: sudo-1.8.6p7-20.el7.x86_64.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 7): aarch64: sudo-debuginfo-1.8.6p7-20.el7.aarch64.rpm sudo-devel-1.8.6p7-20.el7.aarch64.rpm ppc64: sudo-debuginfo-1.8.6p7-20.el7.ppc.rpm sudo-debuginfo-1.8.6p7-20.el7.ppc64.rpm sudo-devel-1.8.6p7-20.el7.ppc.rpm sudo-devel-1.8.6p7-20.el7.ppc64.rpm ppc64le: sudo-debuginfo-1.8.6p7-20.el7.ppc64le.rpm sudo-devel-1.8.6p7-20.el7.ppc64le.rpm s390x: sudo-debuginfo-1.8.6p7-20.el7.s390.rpm sudo-debuginfo-1.8.6p7-20.el7.s390x.rpm sudo-devel-1.8.6p7-20.el7.s390.rpm sudo-devel-1.8.6p7-20.el7.s390x.rpm x86_64: sudo-debuginfo-1.8.6p7-20.el7.i686.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm sudo-devel-1.8.6p7-20.el7.i686.rpm sudo-devel-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: sudo-1.8.6p7-20.el7.src.rpm x86_64: sudo-1.8.6p7-20.el7.x86_64.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm Red Hat Enterprise Linux Workstation Optional (v. 7): x86_64: sudo-debuginfo-1.8.6p7-20.el7.i686.rpm sudo-debuginfo-1.8.6p7-20.el7.x86_64.rpm sudo-devel-1.8.6p7-20.el7.i686.rpm sudo-devel-1.8.6p7-20.el7.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-2016-7091 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2016 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFYGvyjXlSAg2UNWIIRAgQDAJ9TnuWKifEEXWlNKV7g64VtEwg1DgCcCiRm zMSj2c681H02iS6YZlwbKjI= =uWdO - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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