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amazonAmazonALAS2-2019-1280
HistorySep 13, 2019 - 11:09 p.m.

Medium: kernel

2019-09-1323:09:00
alas.aws.amazon.com
28

8.4 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.1 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

54.3%

Issue Overview:

A buffer overflow due to a singed-unsigned comparsion was found in hidp_process_report() in the net/bluetooth/hidp/core.c in the Linux kernel. The buffer length is an unsigned int but gets cast to a signed int which in certain conditions can lead to a system panic and a denial-of-service. (CVE-2018-9363)

It was found that paravirt_patch_call/jump() functions in the arch/x86/kernel/paravirt.c in the Linux kernel mishandles certain indirect calls, which makes it easier for attackers to conduct Spectre-v2 attacks against paravirtualized guests. (CVE-2018-15594)

Affected Packages:

kernel

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 kernel to update your system.

New Packages:

i686:  
    kernel-headers-4.14.67-71.56.amzn2.i686  
  
src:  
    kernel-4.14.67-71.56.amzn2.src  
  
x86_64:  
    kernel-4.14.67-71.56.amzn2.x86_64  
    kernel-headers-4.14.67-71.56.amzn2.x86_64  
    kernel-debuginfo-common-x86_64-4.14.67-71.56.amzn2.x86_64  
    perf-4.14.67-71.56.amzn2.x86_64  
    perf-debuginfo-4.14.67-71.56.amzn2.x86_64  
    python-perf-4.14.67-71.56.amzn2.x86_64  
    python-perf-debuginfo-4.14.67-71.56.amzn2.x86_64  
    kernel-tools-4.14.67-71.56.amzn2.x86_64  
    kernel-tools-devel-4.14.67-71.56.amzn2.x86_64  
    kernel-tools-debuginfo-4.14.67-71.56.amzn2.x86_64  
    kernel-devel-4.14.67-71.56.amzn2.x86_64  
    kernel-debuginfo-4.14.67-71.56.amzn2.x86_64  

Additional References

Red Hat: CVE-2018-15594, CVE-2018-9363

Mitre: CVE-2018-15594, CVE-2018-9363

8.4 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.1 High

AI Score

Confidence

High

7.2 High

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

0.002 Low

EPSS

Percentile

54.3%

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