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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2974 RHEL 7: .NET Core security update 21 November 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: .NET Core 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-2017-11770 CVE-2017-8585 Reference: ASB-2017.0193 ASB-2017.0098 Original Bulletin: https://access.redhat.com/errata/RHSA-2017:3248 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Low: .NET Core security update Advisory ID: RHSA-2017:3248-01 Product: dotNET on RHEL Advisory URL: https://access.redhat.com/errata/RHSA-2017:3248 Issue date: 2017-11-20 CVE Names: CVE-2017-8585 CVE-2017-11770 ===================================================================== 1. Summary: A security update for .NET Core on RHEL is now available. 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: dotNET on RHEL for Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 dotNET on RHEL for Red Hat Enterprise Linux Server (v. 7) - x86_64 dotNET on RHEL for Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: New versions of .NET Core that address several security vulnerabilities are now available. The updated versions are .NET Core 1.0.8, 1.1.5 and 2.0.3. Security Fixes: * By providing an invalid culture, an attacker can cause a recursive lookup that leads to a denial of service. (CVE-2017-8585) * Supplying a specially crafted certificate can cause an infinite X509Chain, resulting in a denial of service. (CVE-2017-11770) 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/): 1512982 - CVE-2017-8585 dotNet: DDoS via invalid culture 1512992 - CVE-2017-11770 dotNET: DDos via bad certificate 6. Package List: dotNET on RHEL for Red Hat Enterprise Linux ComputeNode (v. 7): Source: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.src.rpm x86_64: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.x86_64.rpm rh-dotnetcore10-dotnetcore-debuginfo-1.0.8-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux ComputeNode (v. 7): Source: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.src.rpm x86_64: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.x86_64.rpm rh-dotnetcore11-dotnetcore-debuginfo-1.1.5-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux ComputeNode (v. 7): Source: rh-dotnet20-dotnet-2.0.3-4.el7.src.rpm x86_64: rh-dotnet20-dotnet-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-debuginfo-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-host-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-runtime-2.0-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-sdk-2.0-2.0.3-4.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Server (v. 7): Source: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.src.rpm x86_64: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.x86_64.rpm rh-dotnetcore10-dotnetcore-debuginfo-1.0.8-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Server (v. 7): Source: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.src.rpm x86_64: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.x86_64.rpm rh-dotnetcore11-dotnetcore-debuginfo-1.1.5-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Server (v. 7): Source: rh-dotnet20-dotnet-2.0.3-4.el7.src.rpm x86_64: rh-dotnet20-dotnet-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-debuginfo-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-host-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-runtime-2.0-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-sdk-2.0-2.0.3-4.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Workstation (v. 7): Source: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.src.rpm x86_64: rh-dotnetcore10-dotnetcore-1.0.8-1.el7.x86_64.rpm rh-dotnetcore10-dotnetcore-debuginfo-1.0.8-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Workstation (v. 7): Source: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.src.rpm x86_64: rh-dotnetcore11-dotnetcore-1.1.5-1.el7.x86_64.rpm rh-dotnetcore11-dotnetcore-debuginfo-1.1.5-1.el7.x86_64.rpm dotNET on RHEL for Red Hat Enterprise Linux Workstation (v. 7): Source: rh-dotnet20-dotnet-2.0.3-4.el7.src.rpm x86_64: rh-dotnet20-dotnet-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-debuginfo-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-host-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-runtime-2.0-2.0.3-4.el7.x86_64.rpm rh-dotnet20-dotnet-sdk-2.0-2.0.3-4.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-2017-8585 https://access.redhat.com/security/cve/CVE-2017-11770 https://access.redhat.com/security/updates/classification/#low https://github.com/dotnet/announcements/issues/34 https://github.com/dotnet/announcements/issues/44 https://github.com/dotnet/core/blob/master/release-notes/2.0/2.0.3.md https://github.com/dotnet/core/blob/master/release-notes/1.1/1.1.5.md https://github.com/dotnet/core/blob/master/release-notes/1.0/1.0.8.md 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 iD8DBQFaEsB8XlSAg2UNWIIRAmOjAJ9wjYtfCUbtPpsnb6lS24iFpnlohwCfW3q7 qK6A1l+OTjiiqdhM/cGc8ZU= =DZ68 - -----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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