ID

VAR-202106-0343

CVE

CVE-2020-24511

TITLE

Red Hat Security Advisory 2021-2302-01

DESCRIPTION

Improper isolation of shared resources in some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access. -----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. For the stable distribution (buster), these problems have been fixed in version 3.20210608.2~deb10u1. Note that there are two reported regressions; for some CoffeeLake CPUs this update may break iwlwifi (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/56) and some for Skylake R0/D0 CPUs on systems using a very outdated firmware/BIOS, the system may hang on boot: (https://github.com/intel/Intel-Linux-Processor-Microcode-Data-Files/issues/31) If you are affected by those issues, you can recover by disabling microcode loading on boot (as documented in README.Debian (also available online at https://salsa.debian.org/hmh/intel-microcode/-/blob/master/debian/README.Debian)) We recommend that you upgrade your intel-microcode packages. For the detailed security status of intel-microcode please refer to its security tracker page at: https://security-tracker.debian.org/tracker/intel-microcode Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAmDXan0ACgkQEMKTtsN8 Tja9aQ//f1dHsEghQsedGnkMCIa2qLi12UFtb4yW7TYV6uwloqbYZMbymvoXYOAB haasn+yCaGUkXuAHxcGvZuN41EkRhdG4LfS5qoZxPMsw84ETjpV2Ohwhuqwf9P20 9pqV1QLjVPCMiCqvHatkzyRNPtRhIh0uCRx5HtIeOEyKTwhVnUJrrljUXCzMDviD 3As0n0yVUPDIcJdaVxp5mxyebf1NyIYMR+7wmzTBOhK6i+rEE4NkKGkcsYBIM1ch AdTQNHv78QZld6ixL8iCUe1NsSugZ2QjbVL1BLW45fJv3f0BIF5uo6LBzbiJlN/6 xWwOdFTfqW1ORyr0k6JQ+yKz3oSE+jfUStwf+zegWOjYes5gGaA/nATzzNwwFfCQ qDqMmnN26qMI3MswP50ESkNs2JTK3955cIJjnscp5DeFArDuCFKh9wcqSZ46/QCE GVRi+F/Dh3JQxv/jP8jfLhCvkBptuendGo9qK5v22QoeCRoHS16dLu7HHP34hRrw k//EgtP35pD9eTNiIsxhmx3qTPD0gbQbcMG/5NTVtpNqsffAxYtqTy8+/4lfPkNn AYtYrrG6tjEHe1gasLkjthB7c0YLzPLdNyZkNIk6XZ2YIhx18N80c7gTBERSJ1Sh 9lmsnX3+5GWM7Fx2NN2vL5xIEo0einMJCyTlNMRDLim2ix1vpZg= =RVf2 -----END PGP SIGNATURE-----

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

local

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2024-11-20T21:39:31.148000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE