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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1309 Important: rpcbind security update 23 May 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rpcbind Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-8779 Reference: ESB-2017.1278 ESB-2017.1241 ESB-2017.1148 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:1262 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: rpcbind security update Advisory ID: RHSA-2017:1262-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2017:1262 Issue date: 2017-05-22 CVE Names: CVE-2017-8779 ===================================================================== 1. Summary: An update for rpcbind is now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. 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 ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: The rpcbind utility is a server that converts Remote Procedure Call (RPC) program numbers into universal addresses. It must be running on the host to be able to make RPC calls on a server on that machine. Security Fix(es): * It was found that due to the way rpcbind uses libtirpc (libntirpc), a memory leak can occur when parsing specially crafted XDR messages. An attacker sending thousands of messages to rpcbind could cause its memory usage to grow without bound, eventually causing it to be terminated by the OOM killer. (CVE-2017-8779) 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/): 1448124 - CVE-2017-8779 rpcbind, libtirpc, libntirpc: Memory leak when failing to parse XDR strings or bytearrays 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: rpcbind-0.2.0-38.el7_3.src.rpm x86_64: rpcbind-0.2.0-38.el7_3.x86_64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: rpcbind-0.2.0-38.el7_3.src.rpm x86_64: rpcbind-0.2.0-38.el7_3.x86_64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: rpcbind-0.2.0-38.el7_3.src.rpm aarch64: rpcbind-0.2.0-38.el7_3.aarch64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.aarch64.rpm ppc64: rpcbind-0.2.0-38.el7_3.ppc64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.ppc64.rpm ppc64le: rpcbind-0.2.0-38.el7_3.ppc64le.rpm rpcbind-debuginfo-0.2.0-38.el7_3.ppc64le.rpm s390x: rpcbind-0.2.0-38.el7_3.s390x.rpm rpcbind-debuginfo-0.2.0-38.el7_3.s390x.rpm x86_64: rpcbind-0.2.0-38.el7_3.x86_64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: rpcbind-0.2.0-38.el7_3.src.rpm x86_64: rpcbind-0.2.0-38.el7_3.x86_64.rpm rpcbind-debuginfo-0.2.0-38.el7_3.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-2017-8779 https://access.redhat.com/security/updates/classification/#important 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 iD8DBQFZImGhXlSAg2UNWIIRAh7TAJ9tlg3/AaQtejXB4xCaWGv7O2bGXACfZQXh /KHbCaDWXW5upkT0sOkxOUg= =Lz5V - -----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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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