Ubuntu: Security Advisory for intel-microcode (USN-4385-1)

The remote host is missing an update for the 'intel-microcode' package(s) announced via the USN-4385-1 advisory.

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) It was discovered that on some Intel processors, partial data values previously read from a vector register on a physical core may be propagated into unused portions of the store buffer. A local attacker could possible use this to expose sensitive information. (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. A local attacker could possibly use this to expose sensitive information. (CVE-2020-0549)

'intel-microcode' package(s) on Ubuntu 20.04 LTS, Ubuntu 19.10, Ubuntu 18.04 LTS, Ubuntu 16.04 LTS.

Checks if a vulnerable package version is present on the target host.

Please install the updated package(s).