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OVAL

ALAS-2018-1038 --- kernel perf

ID: oval:org.secpod.oval:def:1600896Date: (C)2018-06-12   (M)2018-07-27
Class: PATCHFamily: unix




An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions . It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit . As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks.By mmaping a FUSE-backed file onto a process's memory containing command line arguments , an attacker can cause utilities from psutils or procps or any other program which makes a read call to the /proc/<pid>/cmdline files to block indefinitely or for some controlled time .

Platform:
Amazon Linux AMI
Product:
kernel
perf
Reference:
ALAS-2018-1038
CVE-2018-1120
CVE-2018-3639
CVE    2
CVE-2018-3639
CVE-2018-1120
CPE    2154
cpe:/a:redhat:enterprise_mrg:2.0
cpe:/o:amazon:linux
cpe:/a:perf:perf
cpe:/o:debian:debian_linux:8.0
...

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