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amazonAmazonALAS-2020-1338
HistoryFeb 04, 2020 - 10:39 p.m.

Important: kernel

2020-02-0422:39:00
alas.aws.amazon.com
233

6.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

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

5.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

27.6%

Issue Overview:

A memory leak in the crypto_report() function in crypto/crypto_user_base.c in the Linux kernel through 5.3.11 allows attackers to cause a denial of service (memory consumption) by triggering crypto_report_alg() failures, aka CID-ffdde5932042. (CVE-2019-19062)

An out-of-bounds memory write issue was found in the Linux Kernel, version 3.13 through 5.4, in the way the Linux kernel’s KVM hypervisor handled the ‘KVM_GET_EMULATED_CPUID’ ioctl(2) request to get CPUID features emulated by the KVM hypervisor. A user or process able to access the ‘/dev/kvm’ device could use this flaw to crash the system, resulting in a denial of service. (CVE-2019-19332 )

Affected Packages:

kernel

Issue Correction:
Run yum update kernel to update your system.

New Packages:

i686:  
    kernel-debuginfo-common-i686-4.14.165-102.185.amzn1.i686  
    kernel-debuginfo-4.14.165-102.185.amzn1.i686  
    kernel-headers-4.14.165-102.185.amzn1.i686  
    kernel-tools-4.14.165-102.185.amzn1.i686  
    kernel-devel-4.14.165-102.185.amzn1.i686  
    perf-debuginfo-4.14.165-102.185.amzn1.i686  
    kernel-tools-devel-4.14.165-102.185.amzn1.i686  
    perf-4.14.165-102.185.amzn1.i686  
    kernel-4.14.165-102.185.amzn1.i686  
    kernel-tools-debuginfo-4.14.165-102.185.amzn1.i686  
  
src:  
    kernel-4.14.165-102.185.amzn1.src  
  
x86_64:  
    kernel-4.14.165-102.185.amzn1.x86_64  
    kernel-debuginfo-4.14.165-102.185.amzn1.x86_64  
    kernel-tools-4.14.165-102.185.amzn1.x86_64  
    kernel-devel-4.14.165-102.185.amzn1.x86_64  
    perf-debuginfo-4.14.165-102.185.amzn1.x86_64  
    kernel-headers-4.14.165-102.185.amzn1.x86_64  
    kernel-tools-debuginfo-4.14.165-102.185.amzn1.x86_64  
    perf-4.14.165-102.185.amzn1.x86_64  
    kernel-debuginfo-common-x86_64-4.14.165-102.185.amzn1.x86_64  
    kernel-tools-devel-4.14.165-102.185.amzn1.x86_64  

Additional References

Red Hat: CVE-2019-19062, CVE-2019-19332

Mitre: CVE-2019-19062, CVE-2019-19332

6.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

HIGH

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

5.6 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

COMPLETE

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

0.001 Low

EPSS

Percentile

27.6%