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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.3027 Moderate: tcmu-runner security update 29 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tcmu-runner Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Impact/Access: Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-1000201 CVE-2017-1000200 CVE-2017-1000199 CVE-2017-1000198 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:3277 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: tcmu-runner security update Advisory ID: RHSA-2017:3277-01 Product: Red Hat Gluster Storage Advisory URL: https://access.redhat.com/errata/RHSA-2017:3277 Issue date: 2017-11-29 CVE Names: CVE-2017-1000198 CVE-2017-1000199 CVE-2017-1000200 CVE-2017-1000201 ===================================================================== 1. Summary: An update for tcmu-runner is now available for Red Hat Gluster Storage 3.3.1 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Moderate. 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 Gluster Storage Server 3.3 on RHEL-7 - x86_64 3. Description: The tcmu-runner packages provide a service that handles the complexity of the LIO kernel target's userspace passthrough interface (TCMU). It presents a C plugin API for extension modules that handle SCSI requests in ways not possible or suitable to be handled by LIO's in-kernel backstores. Security Fix(es): * A flaw was found in the implementation of CheckConfig method in handler_glfs.so of the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could send a specially crafted string to CheckConfig method resulting in various kinds of segmentation fault. (CVE-2017-1000198) * A NULL pointer dereference flaw was found in the UnregisterHandler method implemented in the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could call the UnregisterHandler method with the name of a handler loaded internally in tcmu-runner via dlopen() to trigger DoS. (CVE-2017-1000200) * A NULL pointer dereference flaw was found in the UnregisterHandler method implemented in the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could call UnregisterHandler method with non-existing tcmu handler as paramater to trigger DoS. (CVE-2017-1000201) * A file information leak flaw was found in implementation of the CheckConfig method in handler_qcow.so of the tcmu-runner daemon. A local, non-root user with access to the D-Bus system bus could use this flaw to leak arbitrary file names which might not be retrievable by non-root user. (CVE-2017-1000199) 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/): 1472332 - tcmu-runner: Various security and functionality related bugfixes (multiple DoS, memory leaks) 1487246 - CVE-2017-1000198 tcmu-runner: glfs handler allows local DoS via crafted CheckConfig strings 1487247 - CVE-2017-1000201 tcmu-runner: UnregisterHandler dbus method in tcmu-runner daemon for non-existing handler causes DoS 1487251 - CVE-2017-1000200 tcmu-runner: UnregisterHandler D-Bus method in tcmu-runner daemon for internal handler causes DoS 1487252 - CVE-2017-1000199 tcmu-runner: qcow handler opens up an information leak via the CheckConfig D-Bus method 6. Package List: Red Hat Gluster Storage Server 3.3 on RHEL-7: Source: tcmu-runner-1.2.0-16.el7rhgs.src.rpm x86_64: libtcmu-1.2.0-16.el7rhgs.x86_64.rpm libtcmu-devel-1.2.0-16.el7rhgs.x86_64.rpm tcmu-runner-1.2.0-16.el7rhgs.x86_64.rpm tcmu-runner-debuginfo-1.2.0-16.el7rhgs.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-2017-1000198 https://access.redhat.com/security/cve/CVE-2017-1000199 https://access.redhat.com/security/cve/CVE-2017-1000200 https://access.redhat.com/security/cve/CVE-2017-1000201 https://access.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2017 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaHipnXlSAg2UNWIIRApskAJ4p+MyMaPXy3qq89HU2FrSo4Qb+fwCffIls CIp3Ur5Mk5owm97snG6u5+k= =Ofa8 - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWh5IhYx+lLeg9Ub1AQhbcw//fHo+nKmx+2ObU3GN6T+4lFAH0VouikPl bUNNl7ZpgStGvUQtn6yIYs7k2qoQWj5hgP0UN3D6iIja5BdB9BudWDyUYvlNEFS2 hOHeAxUBSP6lZ9KdXinKbHRiXjmkVcvGzEat8OnlcthtfHK7LRBBm3F45zzaKEXS gJTuZVbcoY5wCBOYh4WO5TguhyM+j2hWqlbduUlTqOlOaD3lWqIIG16cfQy1hwjD Xv5cSyxMyhUTMC90smZL/Ulv+tSfmSbHnByf+UgZ+Uo8MRDUoGsfkz5YX6JMk1QG XBglPlVO7EXaotOcUz5g57lpgaBYpxwiCdufu6kFrQpuoshOW7jHb0JIggcid9Lo EyGmiC92XFR4IhHZaojTZt0kx4uHKjaZU5nJLp5SuaS84br073MUug1L3287L41e Fj9E01//AokTWsAzSSNoInRn5TJ75yKdHZI6mUbQ2S4eG3zgdOPOo/CfAkqchLw4 TOA4JVmtsmJ9eyF43/gmTZGHerFw1KU4AsK6smQwoA4IbsTd+wUuSY5581f/j9Ta vasGLdVamkNqojuSxcFSfNPdDN0SDkhidxdvzbt58rgpg+yTN7s59Qtykz8J06Mt 3S+SroWs3GHU5T5oBDGvSV/TKOUhxcD6MNJIOzwr/YsnOFYbSYPxk7NVKeogV7x+ 094TbyCqTVk= =kPat -----END PGP SIGNATURE-----