CVSS2
Attack Vector
LOCAL
Attack 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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
23.5%
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
Red Hat: CVE-2020-1983
Mitre: CVE-2020-1983
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Amazon Linux | 2 | aarch64 | qemu | < 3.1.0-8.amzn2.0.4 | qemu-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-common | < 3.1.0-8.amzn2.0.4 | qemu-common-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-guest-agent | < 3.1.0-8.amzn2.0.4 | qemu-guest-agent-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-img | < 3.1.0-8.amzn2.0.4 | qemu-img-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | ivshmem-tools | < 3.1.0-8.amzn2.0.4 | ivshmem-tools-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-block-curl | < 3.1.0-8.amzn2.0.4 | qemu-block-curl-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-block-dmg | < 3.1.0-8.amzn2.0.4 | qemu-block-dmg-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-block-iscsi | < 3.1.0-8.amzn2.0.4 | qemu-block-iscsi-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-block-nfs | < 3.1.0-8.amzn2.0.4 | qemu-block-nfs-3.1.0-8.amzn2.0.4.aarch64.rpm |
Amazon Linux | 2 | aarch64 | qemu-block-rbd | < 3.1.0-8.amzn2.0.4 | qemu-block-rbd-3.1.0-8.amzn2.0.4.aarch64.rpm |
CVSS2
Attack Vector
LOCAL
Attack 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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
23.5%