ID

VAR-202106-0345

CVE

CVE-2020-24513

TITLE

Red Hat Security Advisory 2021-2299-01

DESCRIPTION

Domain-bypass transient execution vulnerability in some Intel Atom(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. 6 ELS) - i386, x86_64 3. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: microcode_ctl security, bug fix and enhancement update Advisory ID: RHSA-2021:2305-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:2305 Issue date: 2021-06-08 CVE Names: CVE-2020-24489 CVE-2020-24511 CVE-2020-24512 CVE-2020-24513 ==================================================================== 1. Summary: An update for microcode_ctl 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) - x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: The microcode_ctl packages provide microcode updates for Intel. Security Fix(es): * hw: vt-d related privilege escalation (CVE-2020-24489) * hw: improper isolation of shared resources in some Intel Processors (CVE-2020-24511) * hw: observable timing discrepancy in some Intel Processors (CVE-2020-24512) * hw: information disclosure on some Intel Atom processors (CVE-2020-24513) Bug Fix(es) and Enhancement(s): * Update Intel CPU microcode to microcode-20210525 release 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/): 1962650 - CVE-2020-24489 hw: vt-d related privilege escalation 1962666 - CVE-2020-24513 hw: information disclosure on some Intel Atom processors 1962702 - CVE-2020-24511 hw: improper isolation of shared resources in some Intel Processors 1962722 - CVE-2020-24512 hw: observable timing discrepancy in some Intel Processors 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: microcode_ctl-2.1-73.9.el7_9.src.rpm x86_64: microcode_ctl-2.1-73.9.el7_9.x86_64.rpm microcode_ctl-debuginfo-2.1-73.9.el7_9.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: microcode_ctl-2.1-73.9.el7_9.src.rpm x86_64: microcode_ctl-2.1-73.9.el7_9.x86_64.rpm microcode_ctl-debuginfo-2.1-73.9.el7_9.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: microcode_ctl-2.1-73.9.el7_9.src.rpm x86_64: microcode_ctl-2.1-73.9.el7_9.x86_64.rpm microcode_ctl-debuginfo-2.1-73.9.el7_9.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 7): Source: microcode_ctl-2.1-73.9.el7_9.src.rpm x86_64: microcode_ctl-2.1-73.9.el7_9.x86_64.rpm microcode_ctl-debuginfo-2.1-73.9.el7_9.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-2020-24489 https://access.redhat.com/security/cve/CVE-2020-24511 https://access.redhat.com/security/cve/CVE-2020-24512 https://access.redhat.com/security/cve/CVE-2020-24513 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 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYMAkjNzjgjWX9erEAQj9Rw//aAXwJWN2Q/e3KJ6n+bdhBXSWxMI+ro7r 86Elrmw3BY2uTNbkjEorxQfON15ZawMJn0eNprNGA4gxRJ1/OlV+bMXcXsHcxdwt 2ndTxSL9G3xd+B3j6L8N2YQAXzCSzJT2ohbFPntZeMDpd6hILbNO+XDmnPu0uEsh E1Rl1BNsQJGoJ9yrrk9hqae2erlB2nTuDwYcNN6YWANkpWxPnzrJBRt115hBL/Xm Gh9vsxTC98/V+TWn0o0gLDUr0sM21KhD2U8F3byxBQB4Kr4Y0X34U12whwHkG95b m+HKj38OHmwhm+JZV68AsVBbnaa4TM3ilccuAVujxcW10IyXZBsmBFoEnIQ5Y7mm X8Bc5goFlKet/cDqwwUDBvjFfXfC61+2N4gRnWp48b8+vojs+T6JsurrCJbRhXjL gy8adoRwG3zNj+0xh7sHjX7XkIYFwrWMxiFHUaJWMV8pfx6NvGJJTiRR6n1+nKJt scM4MX7RUnLlcmRMbN4HpU4Kg7CLqI3dgiJ1XAgIUyB4Xvsb+Ckp/M8EB9I+GLDP Z4feYJ/cplYpSCcRG0xxHsnqrDFgAI0P/KVy9GQeAaXWWVwQzP5vHr+tauLSaEae q4MCBAMQQ69TX2rSLhnwtH1fpVuBsZibIN3QAikZM///peIXrNcmR4jPBVRPU6p+ ulH8AIb5GRA=sYI9 -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . ========================================================================= Ubuntu Security Notice USN-4985-1 June 09, 2021 intel-microcode vulnerabilities ========================================================================= A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.10 - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 ESM - Ubuntu 14.04 ESM Summary: Several security issues were fixed in Intel Microcode. This may allow a local user to perform a privilege escalation attack. (CVE-2021-24489) Joseph Nuzman discovered that some Intel processors may not properly apply EIBRS mitigations (originally developed for CVE-2017-5715) and hence may allow unauthorized memory reads via sidechannel attacks. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2020-24511) Travis Downs discovered that some Intel processors did not properly flush cache-lines for trivial-data values. This may allow an unauthorized user to infer the presence of these trivial-data-cache-lines via timing sidechannel attacks. A local attacker could use this to expose sensitive information. (CVE-2020-24512) It was discovered that certain Intel Atom processors could expose memory contents stored in microarchitectural buffers. A local attacker could use this to expose sensitive information. (CVE-2020-24513) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: intel-microcode 3.20210608.0ubuntu0.21.04.1 Ubuntu 20.10: intel-microcode 3.20210608.0ubuntu0.20.10.1 Ubuntu 20.04 LTS: intel-microcode 3.20210608.0ubuntu0.20.04.1 Ubuntu 18.04 LTS: intel-microcode 3.20210608.0ubuntu0.18.04.1 Ubuntu 16.04 ESM: intel-microcode 3.20210608.0ubuntu0.16.04.1+esm1 Ubuntu 14.04 ESM: intel-microcode 3.20210608.0ubuntu0.14.04.1+esm1 After a standard system update you need to reboot your computer to make all the necessary changes

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-01-14T20:11:05.075000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE