CVE-2018-12127

Public on 2019-05-07
Modified on 2019-08-27
Description
Microprocessors use a 'load port' subcomponent to perform load operations from memory or IO. During a load operation, the load port receives data from the memory or IO subsystem and then provides the data to the CPU registers and operations in the CPU's pipelines. Stale load operations results are stored in the 'load port' table until overwritten by newer operations. Certain load-port operations triggered by an attacker can be used to reveal data about previous stale requests leaking data back to the attacker via a timing side-channel.
Severity
Medium
CVSS v3 Base Score
6.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 2 libvirt 2019-08-23 03:34 ALAS2-2019-1274
Amazon Linux 2 kernel 2019-05-07 22:39 ALAS2-2019-1205
Amazon Linux 1 qemu-kvm 2019-08-07 23:12 ALAS-2019-1260
Amazon Linux 1 kernel 2019-05-07 22:54 ALAS-2019-1205

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 6.5 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD CVSSv2 4.7 AV:L/AC:M/Au:N/C:C/I:N/A:N
NVD CVSSv3 5.6 CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N