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amazonAmazonALAS2-2020-1485
HistorySep 01, 2020 - 12:40 a.m.

Medium: qemu

2020-09-0100:40:00
alas.aws.amazon.com
24

6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

High

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

22.3%

JSON

Issue Overview:

A use after free vulnerability in ip_reass() in ip_input.c of libslirp 4.2.0 and prior releases allows crafted packets to cause a denial of service. A use-after-free flaw was found in the SLiRP networking implementation of the QEMU emulator. Specifically, this flaw occurs in the ip_reass() routine while reassembling incoming IP fragments whose combined size is bigger than 65k. This flaw allows an attacker to crash the QEMU process on the host, resulting in a denial of service. (CVE-2020-1983)

Affected Packages:

qemu

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 qemu to update your system.

New Packages:

aarch64:  
    qemu-3.1.0-8.amzn2.0.4.aarch64  
    qemu-common-3.1.0-8.amzn2.0.4.aarch64  
    qemu-guest-agent-3.1.0-8.amzn2.0.4.aarch64  
    qemu-img-3.1.0-8.amzn2.0.4.aarch64  
    ivshmem-tools-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-curl-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-dmg-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-nfs-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-rbd-3.1.0-8.amzn2.0.4.aarch64  
    qemu-block-ssh-3.1.0-8.amzn2.0.4.aarch64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.4.aarch64  
    qemu-audio-oss-3.1.0-8.amzn2.0.4.aarch64  
    qemu-audio-pa-3.1.0-8.amzn2.0.4.aarch64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.4.aarch64  
    qemu-ui-curses-3.1.0-8.amzn2.0.4.aarch64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.4.aarch64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.4.aarch64  
    qemu-kvm-3.1.0-8.amzn2.0.4.aarch64  
    qemu-kvm-core-3.1.0-8.amzn2.0.4.aarch64  
    qemu-user-3.1.0-8.amzn2.0.4.aarch64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.4.aarch64  
    qemu-user-static-3.1.0-8.amzn2.0.4.aarch64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.4.aarch64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.4.aarch64  
    qemu-system-x86-3.1.0-8.amzn2.0.4.aarch64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.4.aarch64  
    qemu-debuginfo-3.1.0-8.amzn2.0.4.aarch64  
  
i686:  
    qemu-3.1.0-8.amzn2.0.4.i686  
    qemu-common-3.1.0-8.amzn2.0.4.i686  
    qemu-guest-agent-3.1.0-8.amzn2.0.4.i686  
    qemu-img-3.1.0-8.amzn2.0.4.i686  
    ivshmem-tools-3.1.0-8.amzn2.0.4.i686  
    qemu-block-curl-3.1.0-8.amzn2.0.4.i686  
    qemu-block-dmg-3.1.0-8.amzn2.0.4.i686  
    qemu-block-iscsi-3.1.0-8.amzn2.0.4.i686  
    qemu-block-nfs-3.1.0-8.amzn2.0.4.i686  
    qemu-block-ssh-3.1.0-8.amzn2.0.4.i686  
    qemu-audio-alsa-3.1.0-8.amzn2.0.4.i686  
    qemu-audio-oss-3.1.0-8.amzn2.0.4.i686  
    qemu-audio-pa-3.1.0-8.amzn2.0.4.i686  
    qemu-audio-sdl-3.1.0-8.amzn2.0.4.i686  
    qemu-ui-curses-3.1.0-8.amzn2.0.4.i686  
    qemu-ui-gtk-3.1.0-8.amzn2.0.4.i686  
    qemu-ui-sdl-3.1.0-8.amzn2.0.4.i686  
    qemu-kvm-3.1.0-8.amzn2.0.4.i686  
    qemu-kvm-core-3.1.0-8.amzn2.0.4.i686  
    qemu-user-3.1.0-8.amzn2.0.4.i686  
    qemu-user-binfmt-3.1.0-8.amzn2.0.4.i686  
    qemu-user-static-3.1.0-8.amzn2.0.4.i686  
    qemu-system-aarch64-3.1.0-8.amzn2.0.4.i686  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.4.i686  
    qemu-system-x86-3.1.0-8.amzn2.0.4.i686  
    qemu-system-x86-core-3.1.0-8.amzn2.0.4.i686  
    qemu-debuginfo-3.1.0-8.amzn2.0.4.i686  
  
src:  
    qemu-3.1.0-8.amzn2.0.4.src  
  
x86_64:  
    qemu-3.1.0-8.amzn2.0.4.x86_64  
    qemu-common-3.1.0-8.amzn2.0.4.x86_64  
    qemu-guest-agent-3.1.0-8.amzn2.0.4.x86_64  
    qemu-img-3.1.0-8.amzn2.0.4.x86_64  
    ivshmem-tools-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-curl-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-dmg-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-nfs-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-rbd-3.1.0-8.amzn2.0.4.x86_64  
    qemu-block-ssh-3.1.0-8.amzn2.0.4.x86_64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.4.x86_64  
    qemu-audio-oss-3.1.0-8.amzn2.0.4.x86_64  
    qemu-audio-pa-3.1.0-8.amzn2.0.4.x86_64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.4.x86_64  
    qemu-ui-curses-3.1.0-8.amzn2.0.4.x86_64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.4.x86_64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.4.x86_64  
    qemu-kvm-3.1.0-8.amzn2.0.4.x86_64  
    qemu-kvm-core-3.1.0-8.amzn2.0.4.x86_64  
    qemu-user-3.1.0-8.amzn2.0.4.x86_64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.4.x86_64  
    qemu-user-static-3.1.0-8.amzn2.0.4.x86_64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.4.x86_64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.4.x86_64  
    qemu-system-x86-3.1.0-8.amzn2.0.4.x86_64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.4.x86_64  
    qemu-debuginfo-3.1.0-8.amzn2.0.4.x86_64

Additional References

Red Hat: CVE-2020-1983

Mitre: CVE-2020-1983

OSVersionArchitecturePackageVersionFilename
Amazon Linux2aarch64qemu< 3.1.0-8.amzn2.0.4qemu-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-common< 3.1.0-8.amzn2.0.4qemu-common-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-guest-agent< 3.1.0-8.amzn2.0.4qemu-guest-agent-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-img< 3.1.0-8.amzn2.0.4qemu-img-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64ivshmem-tools< 3.1.0-8.amzn2.0.4ivshmem-tools-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-block-curl< 3.1.0-8.amzn2.0.4qemu-block-curl-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-block-dmg< 3.1.0-8.amzn2.0.4qemu-block-dmg-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-block-iscsi< 3.1.0-8.amzn2.0.4qemu-block-iscsi-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-block-nfs< 3.1.0-8.amzn2.0.4qemu-block-nfs-3.1.0-8.amzn2.0.4.aarch64.rpm
Amazon Linux2aarch64qemu-block-rbd< 3.1.0-8.amzn2.0.4qemu-block-rbd-3.1.0-8.amzn2.0.4.aarch64.rpm
Rows per page:
1-10 of 831

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6.5 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

High

2.1 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.001 Low

EPSS

Percentile

22.3%

JSON
Related for ALAS2-2020-1485
altlinux1nessus38openvas21alpinelinux1fedora2prion1redhatcve1osv8suse2veracode1ubuntucve1cve1almalinux2debiancve1redhat7rocky2oraclelinux4centos1debian3amazon1ubuntu1