Mehrere Probleme in Intel Microcode
ID: | USN-4985-1 |
Distribution: | Ubuntu |
Plattformen: | Ubuntu 18.04 LTS, Ubuntu 14.04 ESM, Ubuntu 20.04 LTS, Ubuntu 20.10, Ubuntu 21.04, Ubuntu 16.04 ESM |
Datum: | Mi, 9. Juni 2021, 23:18 |
Referenzen: | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24512
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24511 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24489 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-5715 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24513 |
Applikationen: | intel-microcode |
Originalnachricht |
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--===============8243797072784372269== Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha512; protocol="application/pgp-signature" --=-=-= Content-Type: text/plain; format=flowed ========================================================================== 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. Software Description: - intel-microcode: Processor microcode for Intel CPUs Details: It was discovered that some Intel processors may not properly invalidate cache entries used by Intel Virtualization Technology for Directed I/O (VT-d). 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. References: https://ubuntu.com/security/notices/USN-4985-1 CVE-2020-24511, CVE-2020-24512, CVE-2020-24513, CVE-2021-24489 Package Information: https://launchpad.net/ubuntu/+source/intel-microcode/3.20210608.0ubuntu0.21.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20210608.0ubuntu0.20.10.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20210608.0ubuntu0.20.04.1 https://launchpad.net/ubuntu/+source/intel-microcode/3.20210608.0ubuntu0.18.04.1 --=-=-= Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQFOBAEBCgA4FiEEiOlTC8vdwgBRe16w9JjS2d59rZwFAmDAU4EaHGFsZXgubXVy cmF5QGNhbm9uaWNhbC5jb20ACgkQ9JjS2d59rZxmbwgAg5QSsviDgYEDIeCHN4wX wwYKevu7BpTYECaNa4KbYZeG8UPIaZhgWbIwGyM6tzvg/lj2RRvZZAPZdqm9OUCM CIyQV4O3ZDlLx1boPe5mv6B7iPRZIKwnyJC8e6Kg0ioCq0PQNaBIn8ShUcJjeo+m gMLN5hNrJEhQJKb051oI7SpQH79O9JSy0t8YfXZZVgnEllN5HgZYInocADfxEj2O ViF2n8O/M/1RUk2wRkHRQqlSCERDpT7Eou/9AKrl8UMcfna3nFK5+loqdag8qF0d CA0iS25wbzCIzTNEwh+lby33cTSty7nOS6o1GzqktStWRJBRLpd1Vtf2IRgungVX jQ== =YeUA -----END PGP SIGNATURE----- --=-=-=-- --===============8243797072784372269== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline -- ubuntu-security-announce mailing list ubuntu-security-announce@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-security-announce |