Lucene search

K
amazonAmazonALAS2-2018-962
HistoryFeb 20, 2018 - 9:46 p.m.

Important: linux-firmware

2018-02-2021:46:00
alas.aws.amazon.com
28

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

1.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

0.975 High

EPSS

Percentile

100.0%

Issue Overview:

Speculative execution branch target injection
An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimization). There are three primary variants of the issue which differ in the way the speculative execution can be exploited. Variant CVE-2017-5715 triggers the speculative execution by utilizing branch target injection. It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory accesses may cause allocation into the microprocessor’s data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to cross the syscall and guest/host boundaries and read privileged memory by conducting targeted cache side-channel attacks.(CVE-2017-5715)

Affected Packages:

linux-firmware

Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.

Issue Correction:
Run yum update linux-firmware to update your system.

New Packages:

noarch:  
    linux-firmware-20170606-58.gitc990aae.amzn2.noarch  
    iwl100-firmware-39.31.5.1-58.amzn2.noarch  
    iwl105-firmware-18.168.6.1-58.amzn2.noarch  
    iwl135-firmware-18.168.6.1-58.amzn2.noarch  
    iwl1000-firmware-39.31.5.1-58.amzn2.noarch  
    iwl2000-firmware-18.168.6.1-58.amzn2.noarch  
    iwl2030-firmware-18.168.6.1-58.amzn2.noarch  
    iwl3160-firmware-22.0.7.0-58.amzn2.noarch  
    iwl3945-firmware-15.32.2.9-58.amzn2.noarch  
    iwl4965-firmware-228.61.2.24-58.amzn2.noarch  
    iwl5000-firmware-8.83.5.1_1-58.amzn2.noarch  
    iwl5150-firmware-8.24.2.2-58.amzn2.noarch  
    iwl6000-firmware-9.221.4.1-58.amzn2.noarch  
    iwl6000g2a-firmware-17.168.5.3-58.amzn2.noarch  
    iwl6000g2b-firmware-17.168.5.2-58.amzn2.noarch  
    iwl6050-firmware-41.28.5.1-58.amzn2.noarch  
    iwl7260-firmware-22.0.7.0-58.amzn2.noarch  
    iwl7265-firmware-22.0.7.0-58.amzn2.noarch  
  
src:  
    linux-firmware-20170606-58.gitc990aae.amzn2.src  

Additional References

Red Hat: CVE-2017-5715

Mitre: CVE-2017-5715

5.6 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

6.4 Medium

AI Score

Confidence

High

1.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:L/AC:M/Au:N/C:P/I:N/A:N

0.975 High

EPSS

Percentile

100.0%

Related for ALAS2-2018-962