ID

VAR-202006-0241

CVE

CVE-2020-0543

TITLE

plural  Intel(R)  Information leakage vulnerabilities in products

DESCRIPTION

Incomplete cleanup from specific special register read operations in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. plural Intel(R) The product contains a vulnerability related to information leakage.Information may be obtained. Intel 06_3DH and Intel 06_9EH are both a central processing unit (CPU) product of Intel Corporation of the United States. Security vulnerabilities exist in several Intel products. The following products and versions are affected: Intel Celeron 1000M; Celeron 1005M; Celeron 1007U; Celeron 1019Y; Celeron 1020m, etc. ========================================================================== Ubuntu Security Notice USN-5617-1 September 19, 2022 xen vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS Summary: Several security issues were fixed in Xen. Software Description: - xen: Public headers and libs for Xen Details: It was discovered that memory contents previously stored in microarchitectural special registers after RDRAND, RDSEED, and SGX EGETKEY read operations on Intel client and Xeon E3 processors may be briefly exposed to processes on the same or different processor cores. A local attacker could use this to expose sensitive information. (CVE-2020-0543) Julien Grall discovered that Xen incorrectly handled memory barriers on ARM-based systems. An attacker could possibly use this issue to cause a denial of service, obtain sensitive information or escalate privileges. (CVE-2020-11739) Ilja Van Sprundel discovered that Xen incorrectly handled profiling of guests. An unprivileged attacker could use this issue to obtain sensitive information from other guests, cause a denial of service or possibly gain privileges. (CVE-2020-11740, CVE-2020-11741) It was discovered that Xen incorrectly handled grant tables. A malicious guest could possibly use this issue to cause a denial of service. (CVE-2020-11742, CVE-2020-11743) Jan Beulich discovered that Xen incorrectly handled certain code paths. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-15563) Julien Grall discovered that Xen incorrectly verified memory addresses provided by the guest on ARM-based systems. A malicious guest administrator could possibly use this issue to cause a denial of service. (CVE-2020-15564) Roger Pau Monn\xe9 discovered that Xen incorrectly handled caching on x86 Intel systems. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-15565) It was discovered that Xen incorrectly handled error in event-channel port allocation. A malicious guest could possibly use this issue to cause a denial of service. (CVE-2020-15566) Jan Beulich discovered that Xen incorrectly handled certain EPT (Extended Page Tables). An attacker could possibly use this issue to cause a denial of service, data corruption or privilege escalation. (CVE-2020-15567) Andrew Cooper discovered that Xen incorrectly handled PCI passthrough. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25595) Andrew Cooper discovered that Xen incorrectly sanitized path injections. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25596) Jan Beulich discovered that Xen incorrectly handled validation of event channels. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25597) Julien Grall and Jan Beulich discovered that Xen incorrectly handled resetting event channels. An attacker could possibly use this issue to cause a denial of service or obtain sensitive information. (CVE-2020-25599) Julien Grall discovered that Xen incorrectly handled event channels memory allocation on 32-bits domains. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25600) Jan Beulich discovered that Xen incorrectly handled resetting or cleaning up event channels. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25601) Andrew Cooper discovered that Xen incorrectly handled certain Intel specific MSR (Model Specific Registers). An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25602) Julien Grall discovered that Xen incorrectly handled accessing/allocating event channels. An attacker could possibly use this issue to cause a denial of service, obtain sensitive information of privilege escalation. (CVE-2020-25603) Igor Druzhinin discovered that Xen incorrectly handled locks. An attacker could possibly use this issue to cause a denial of service. (CVE-2020-25604) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: libxendevicemodel1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 libxenevtchn1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 libxengnttab1 4.11.3+24-g14b62ab3e5-1ubuntu2.3 libxenmisc4.11 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xen-hypervisor-4.11-amd64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xen-hypervisor-4.11-arm64 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xen-hypervisor-4.11-armhf 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xen-utils-4.11 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xen-utils-common 4.11.3+24-g14b62ab3e5-1ubuntu2.3 xenstore-utils 4.11.3+24-g14b62ab3e5-1ubuntu2.3 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5617-1 CVE-2020-0543, CVE-2020-11739, CVE-2020-11740, CVE-2020-11741, CVE-2020-11742, CVE-2020-11743, CVE-2020-15563, CVE-2020-15564, CVE-2020-15565, CVE-2020-15566, CVE-2020-15567, CVE-2020-25595, CVE-2020-25596, CVE-2020-25597, CVE-2020-25599, CVE-2020-25600, CVE-2020-25601, CVE-2020-25602, CVE-2020-25603, CVE-2020-25604 Package Information: https://launchpad.net/ubuntu/+source/xen/4.11.3+24-g14b62ab3e5-1ubuntu2.3 . * Avoid temporary file creation, used for here-documents in check_caveats. Software Description: - intel-microcode: Processor microcode for Intel CPUs Details: USN-4385-1 provided updated Intel Processor Microcode. Unfortunately, that update prevented certain processors in the Intel Skylake family (06_4EH) from booting successfully. Additonally, on Ubuntu 20.04 LTS, late loading of microcode was enabled, which could lead to system instability. Please note that the 'dis_ucode_ldr' kernel command line option can be added in the boot menu to disable microcode loading for system recovery. We apologize for the inconvenience. (CVE-2020-0548) It was discovered that on some Intel processors, data from the most recently evicted modified L1 data cache (L1D) line may be propagated into an unused (invalid) L1D fill buffer. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Moderate: microcode_ctl security, bug fix and enhancement update Advisory ID: RHSA-2020:2771-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:2771 Issue date: 2020-06-30 CVE Names: CVE-2020-0543 CVE-2020-0548 CVE-2020-0549 ==================================================================== 1. Summary: An update for microcode_ctl is now available for Red Hat Enterprise Linux 7.4 Advances Update Support. 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 Enterprise Linux Server AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - x86_64 3. Description: Security Fix(es): * hw: Special Register Buffer Data Sampling (SRBDS) (CVE-2020-0543) * hw: L1D Cache Eviction Sampling (CVE-2020-0549) * hw: Vector Register Data Sampling (CVE-2020-0548) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Bug Fix(es): * Update Intel CPU microcode to microcode-20200609 release: - Update of 06-2d-06/0x6d (SNB-E/EN/EP C1/M0) microcode from revision 0x61f up to 0x621; - Update of 06-2d-07/0x6d (SNB-E/EN/EP C2/M1) microcode from revision 0x718 up to 0x71a; - Update of 06-3c-03/0x32 (HSW C0) microcode from revision 0x27 up to 0x28; - Update of 06-3d-04/0xc0 (BDW-U/Y E0/F0) microcode from revision 0x2e up to 0x2f; - Update of 06-45-01/0x72 (HSW-U C0/D0) microcode from revision 0x25 up to 0x26; - Update of 06-46-01/0x32 (HSW-H C0) microcode from revision 0x1b up to 0x1c; - Update of 06-47-01/0x22 (BDW-H/Xeon E3 E0/G0) microcode from revision 0x21 up to 0x22; - Update of 06-4e-03/0xc0 (SKL-U/Y D0) microcode from revision 0xd6 up to 0xdc; - Update of 06-55-03/0x97 (SKX-SP B1) microcode from revision 0x1000151 up to 0x1000157; - Update of 06-55-04/0xb7 (SKX-SP H0/M0/U0, SKX-D M1) microcode (in intel-06-55-04/intel-ucode/06-55-04) from revision 0x2000065 up to 0x2006906; - Update of 06-55-06/0xbf (CLX-SP B0) microcode from revision 0x400002c up to 0x4002f01; - Update of 06-55-07/0xbf (CLX-SP B1) microcode from revision 0x500002c up to 0x5002f01; - Update of 06-5e-03/0x36 (SKL-H/S R0/N0) microcode from revision 0xd6 up to 0xdc; - Update of 06-7e-05/0x80 (ICL-U/Y D1) microcode from revision 0x46 up to 0x78; - Update of 06-8e-09/0x10 (AML-Y22 H0) microcode from revision 0xca up to 0xd6; - Update of 06-8e-09/0xc0 (KBL-U/Y H0) microcode from revision 0xca up to 0xd6; - Update of 06-8e-0a/0xc0 (CFL-U43e D0) microcode from revision 0xca up to 0xd6; - Update of 06-8e-0b/0xd0 (WHL-U W0) microcode from revision 0xca up to 0xd6; - Update of 06-8e-0c/0x94 (AML-Y42 V0, CML-Y42 V0, WHL-U V0) microcode from revision 0xca up to 0xd6; - Update of 06-9e-09/0x2a (KBL-G/H/S/X/Xeon E3 B0) microcode from revision 0xca up to 0xd6; - Update of 06-9e-0a/0x22 (CFL-H/S/Xeon E3 U0) microcode from revision 0xca up to 0xd6; - Update of 06-9e-0b/0x02 (CFL-S B0) microcode from revision 0xca up to 0xd6; - Update of 06-9e-0c/0x22 (CFL-H/S P0) microcode from revision 0xca up to 0xd6; - Update of 06-9e-0d/0x22 (CFL-H R0) microcode from revision 0xca up to 0xd6. * Do not update 06-4e-03 (SKL-U/Y) and 06-5e-03 (SKL-H/S/Xeon E3 v5) to revision 0xdc, use 0xd6 by default. * Enable 06-2d-07 (SNB-E/EN/EP) caveat by default. * Enable 06-55-04 (SKL-SP/X/W) caveat by default. * Avoid find being SIGPIPE'd on early "grep -q" exit in the dracut script. * Re-generate initramfs not only for the currently running kernel, but for several recently installed kernels as well. * Change the URL in the intel-microcode2ucode.8 to point to the GitHub repository since the microcode download section at Intel Download Center does not exist anymore. 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/): 1788786 - CVE-2020-0548 hw: Vector Register Data Sampling 1788788 - CVE-2020-0549 hw: L1D Cache Eviction Sampling 1827165 - CVE-2020-0543 hw: Special Register Buffer Data Sampling (SRBDS) 1849061 - [rhel-7.4.z] Enable SNB-EP caveat by default 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: microcode_ctl-2.1-22.32.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.32.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.32.el7_4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: microcode_ctl-2.1-22.32.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.32.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.32.el7_4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: microcode_ctl-2.1-22.32.el7_4.src.rpm x86_64: microcode_ctl-2.1-22.32.el7_4.x86_64.rpm microcode_ctl-debuginfo-2.1-22.32.el7_4.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. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXvsshdzjgjWX9erEAQgX/A/+JMPvZ7Yd2pxBU4uxBjmUx6B2pNMLLn0V HJnb8yuhEjZI5dcG1Dt3Uo/rNXV7iNFX2SQxjUV7MSL0JNJp6PfuJB2tyN4X80cZ 399yb47HJdLcnX2B0fB11FxNF4+cgf4qsGKx+5RX80CDFkwAsjVe5CvoLV9Mi77B fWNlbeccJCEEN9P+v9fpozf13eD8mucqCoWZIRhFRJJgohO2Q+szz9oZRGMXHI2O hI3IbWXj26jovWgvj0Kscy17YyqccMDgOlOXhTR4KtP3vw5F5ebVrsBOh1P36K4l rUeux8tAWhJnSlt9IX+Fw8YFA/aiVZWEhyxsOGCBDYA4YwhHpBoZG4jwEEnpG8qI YKcYm/Q1mq4cZs0nlyuFEebqaItO+x06T//hWvdaYgUXnORDADxurSs+UJoykbkW DxAIqA2oldF/QJp/1vMTwPqJSLxt+0BOXtSBKaFw9YXRql8dxLkY0ItD+UUAzs8R nV8YK8t+owpGShIsk13BmMYi7FEcqUK8U/KSYpW96Qw4GP+RM2lddewEI9mpZnqg kVjS0xZ2fKIkbVNHnMlGx3PhVcJznhpj1UEbz3fwNgambSMofBPfbEBBtQxv8sDG Z0bl4NjqZVQxSyHLEEx1sAiXpJZXRTuxL/uRpZLFVxFvkglIC4ZLT6DHl2pJKQqx WnZ1F8Y/iFA=CtiE -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Summary: Updated microcode_ctl packages that fix several security bugs and add various enhancements are now available. Software Description: - linux: Linux kernel - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - linux-azure: Linux kernel for Microsoft Azure Cloud systems - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - linux-kvm: Linux kernel for cloud environments - linux-oracle: Linux kernel for Oracle Cloud systems Details: It was discovered that the F2FS file system implementation in the Linux kernel did not properly perform bounds checking on xattrs in some situations. (CVE-2020-0543) Piotr Krysiuk discovered that race conditions existed in the file system implementation in the Linux kernel. (CVE-2020-12114) It was discovered that the USB susbsystem's scatter-gather implementation in the Linux kernel did not properly take data references in some situations, leading to a use-after-free. (CVE-2020-12464) Bui Quang Minh discovered that the XDP socket implementation in the Linux kernel did not properly validate meta-data passed from user space, leading to an out-of-bounds write vulnerability. (CVE-2020-12659) Dmitry Vyukov discovered that the SELinux netlink security hook in the Linux kernel did not validate messages in some situations. The kernel update for this issue provides the ability to disable the mitigation and to report vulnerability status. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well

AFFECTED PRODUCTS