ESB-2018.0221 - [RedHat] qemu-kvm: Access privileged data - Existing account 2018-01-23
Printable versionPGP/GPG verifiable version
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0221 Important: qemu-kvm security updates 23 January 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: qemu-kvm Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 6 Impact/Access: Access Privileged Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-5715 Reference: ASB-2018.0033 ASB-2018.0030 ASB-2018.0009 ASB-2018.0002.4 Original Bulletin: https://access.redhat.com/errata/RHSA-2018:0103 https://access.redhat.com/errata/RHSA-2018:0104 https://access.redhat.com/errata/RHSA-2018:0105 https://access.redhat.com/errata/RHSA-2018:0106 https://access.redhat.com/errata/RHSA-2018:0107 Comment: This bulletin contains five (5) Red Hat security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:0103-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0103 Issue date: 2018-01-22 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.7 Extended Update Support. 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 HPC Node EUS (v. 6.7) - x86_64 Red Hat Enterprise Linux Server EUS (v. 6.7) - i386, ppc64, x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux HPC Node EUS (v. 6.7): Source: qemu-kvm-0.12.1.2-2.479.el6_7.6.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-img-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.479.el6_7.6.x86_64.rpm Red Hat Enterprise Linux Server EUS (v. 6.7): Source: qemu-kvm-0.12.1.2-2.479.el6_7.6.src.rpm i386: qemu-guest-agent-0.12.1.2-2.479.el6_7.6.i686.rpm qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.6.i686.rpm ppc64: qemu-guest-agent-0.12.1.2-2.479.el6_7.6.ppc64.rpm qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.6.ppc64.rpm x86_64: qemu-guest-agent-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-img-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.479.el6_7.6.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.479.el6_7.6.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaZb2HXlSAg2UNWIIRAkdDAJ9q04dz0G95UkoUZm44OhcWALc9WQCgnZhK AcUggf1pHW8mbSAWI7RQtxE= =ig0u - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:0104-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0104 Issue date: 2018-01-22 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.6 Advanced Update Support and Red Hat Enterprise Linux 6.6 Telco Extended Update Support. 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 Server AUS (v. 6.6) - x86_64 Red Hat Enterprise Linux Server TUS (v. 6.6) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.5.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.5.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 6.6): Source: qemu-kvm-0.12.1.2-2.448.el6_6.5.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-img-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.448.el6_6.5.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.448.el6_6.5.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaZcBsXlSAg2UNWIIRAmP4AJ4wG6X5icAlVNDgoq7MFtgmsa8LEQCeK7cD MWIO7ShwBQRtEzuf4e9ruXg= =JPyp - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:0105-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0105 Issue date: 2018-01-22 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.5 Advanced Update Support. 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 Server AUS (v. 6.5) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.5): Source: qemu-kvm-0.12.1.2-2.415.el6_5.17.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.415.el6_5.17.x86_64.rpm qemu-img-0.12.1.2-2.415.el6_5.17.x86_64.rpm qemu-kvm-0.12.1.2-2.415.el6_5.17.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.415.el6_5.17.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.415.el6_5.17.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaZb1KXlSAg2UNWIIRAngdAJ4xQ5GZb649xmMCbkSDhKEwDDxxTACghQiK EY+Hx9Pe5K+7pvX2r5VUaCU= =X7HZ - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:0106-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0106 Issue date: 2018-01-22 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.4 Advanced Update Support. 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 Server AUS (v. 6.4) - x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 6.4) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.4): Source: qemu-kvm-0.12.1.2-2.355.el6_4.10.src.rpm x86_64: qemu-guest-agent-0.12.1.2-2.355.el6_4.10.x86_64.rpm qemu-img-0.12.1.2-2.355.el6_4.10.x86_64.rpm qemu-kvm-0.12.1.2-2.355.el6_4.10.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.10.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.355.el6_4.10.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 6.4): x86_64: qemu-guest-agent-win32-0.12.1.2-2.355.el6_4.10.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.355.el6_4.10.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaZbweXlSAg2UNWIIRAtENAJwJOSN0jRMkdpcbxSnzioj/7+MOsgCfcpzk zveFdz08rgI0ZzK4hnZXFbM= =sf2Z - -----END PGP SIGNATURE----- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: qemu-kvm security update Advisory ID: RHSA-2018:0107-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2018:0107 Issue date: 2018-01-22 ===================================================================== 1. Summary: An update for qemu-kvm is now available for Red Hat Enterprise Linux 6.2 Advanced Update Support. 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 Server AUS (v. 6.2) - x86_64 3. Description: Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix(es): * An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks. (CVE-2017-5715) Note: This is the qemu-kvm side of the CVE-2017-5715 mitigation. Red Hat would like to thank Google Project Zero for reporting this issue. 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 After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect. 5. Bugs fixed (https://bugzilla.redhat.com/): 1519780 - CVE-2017-5715 hw: cpu: speculative execution branch target injection 6. Package List: Red Hat Enterprise Linux Server AUS (v. 6.2): Source: qemu-kvm-0.12.1.2-2.209.el6_2.6.src.rpm x86_64: qemu-img-0.12.1.2-2.209.el6_2.6.x86_64.rpm qemu-kvm-0.12.1.2-2.209.el6_2.6.x86_64.rpm qemu-kvm-debuginfo-0.12.1.2-2.209.el6_2.6.x86_64.rpm qemu-kvm-tools-0.12.1.2-2.209.el6_2.6.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/updates/classification/#important https://access.redhat.com/security/vulnerabilities/speculativeexecution https://access.redhat.com/security/cve/CVE-2017-5715 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2018 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFaZbxaXlSAg2UNWIIRAnGrAJ9wGTMSJ7qFwnCLK8mY113NXN+GxQCgw+O4 DZ4YBumF19G63GHxVBtJGLw= =izbB - -----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 iQIVAwUBWmZ3IIx+lLeg9Ub1AQildA//Zxan/oX5NXQVbHZoPqxMVizCxhyACFoJ C9fVwR+hlp6ryaU5iNQzuFk9QQ6dB0Y6naWR2e0ZH8+bvys1ZVFc1ZdCjaWjBsRr UGPeMt0fZ3UtempC3JrCXHyAzZddGkK5Wu+dQtUgFAGcfvwBY2s5DPK2V+pCqfhp 4+tyIHHbKwJXqdxyWy7kR34lnPL/9Tmlts9h97aEbjykDvRq/KAfJXhqolbokFzR 9HTCizChS6tyc+70bW3QqYZ8HYP98mNFpLtl6tECaB8rzmzQhvSid/hfVq7rrUM8 J47CLwcUaLDWRXtuBmRZof3GjRFFarEMtJOQ7CqEspV2spfjhk6/eykcwKJw0wf+ SJnxHyTL+5qM07Z3+RT2v8KEsQAERVvSV0dN+ioYObI+a434EhZhSbXiHVh+OH9U f60/l+g1AnrqdpaznH6eiYTE1SLL5fVhe50H/DOaDE9PrS6vxJWWgq2FmmJUu4/u 77lPx7VfetnUkbupEv27x8c7xDzK8QKUB9IFSpO/U6GOT1sqfZPYd6aK/SSAyiGR Tq+MzjoKB4fBOGY/9j+D0SRr+jDNB5UfpdIjuU+cstbENW5Uq6lW+YlcMdNsHe4o cC4/ia3rGdXcWIJDRW3469OE0HZDVKxK1QKr9BPsk/Z6BkZ/T6i6y4F3SF88YQ8n ghTS/2pqMd8= =Hd40 -----END PGP SIGNATURE-----« Back to bulletins