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amazonAmazonALAS2-2020-1570
HistoryDec 08, 2020 - 9:30 p.m.

Medium: qemu

2020-12-0821:30:00
alas.aws.amazon.com
32

7.5 High

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

7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.009 Low

EPSS

Percentile

82.5%

Issue Overview:

A use-after-free issue was found in the SLiRP networking implementation of the QEMU emulator. The issue occurs in ip_reass() routine while reassembling incoming packets, if the first fragment is bigger than the m->m_dat[] buffer. A user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service. (CVE-2019-15890)

An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. (CVE-2020-10756)

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.amzn2.0.6.aarch64  
    qemu-common-3.1.0-8.amzn2.0.6.aarch64  
    qemu-guest-agent-3.1.0-8.amzn2.0.6.aarch64  
    qemu-img-3.1.0-8.amzn2.0.6.aarch64  
    ivshmem-tools-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-curl-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-dmg-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-nfs-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-rbd-3.1.0-8.amzn2.0.6.aarch64  
    qemu-block-ssh-3.1.0-8.amzn2.0.6.aarch64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.6.aarch64  
    qemu-audio-oss-3.1.0-8.amzn2.0.6.aarch64  
    qemu-audio-pa-3.1.0-8.amzn2.0.6.aarch64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.6.aarch64  
    qemu-ui-curses-3.1.0-8.amzn2.0.6.aarch64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.6.aarch64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.6.aarch64  
    qemu-kvm-3.1.0-8.amzn2.0.6.aarch64  
    qemu-kvm-core-3.1.0-8.amzn2.0.6.aarch64  
    qemu-user-3.1.0-8.amzn2.0.6.aarch64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.6.aarch64  
    qemu-user-static-3.1.0-8.amzn2.0.6.aarch64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.6.aarch64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.6.aarch64  
    qemu-system-x86-3.1.0-8.amzn2.0.6.aarch64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.6.aarch64  
    qemu-debuginfo-3.1.0-8.amzn2.0.6.aarch64  
  
i686:  
    qemu-3.1.0-8.amzn2.0.6.i686  
    qemu-common-3.1.0-8.amzn2.0.6.i686  
    qemu-guest-agent-3.1.0-8.amzn2.0.6.i686  
    qemu-img-3.1.0-8.amzn2.0.6.i686  
    ivshmem-tools-3.1.0-8.amzn2.0.6.i686  
    qemu-block-curl-3.1.0-8.amzn2.0.6.i686  
    qemu-block-dmg-3.1.0-8.amzn2.0.6.i686  
    qemu-block-iscsi-3.1.0-8.amzn2.0.6.i686  
    qemu-block-nfs-3.1.0-8.amzn2.0.6.i686  
    qemu-block-ssh-3.1.0-8.amzn2.0.6.i686  
    qemu-audio-alsa-3.1.0-8.amzn2.0.6.i686  
    qemu-audio-oss-3.1.0-8.amzn2.0.6.i686  
    qemu-audio-pa-3.1.0-8.amzn2.0.6.i686  
    qemu-audio-sdl-3.1.0-8.amzn2.0.6.i686  
    qemu-ui-curses-3.1.0-8.amzn2.0.6.i686  
    qemu-ui-gtk-3.1.0-8.amzn2.0.6.i686  
    qemu-ui-sdl-3.1.0-8.amzn2.0.6.i686  
    qemu-kvm-3.1.0-8.amzn2.0.6.i686  
    qemu-kvm-core-3.1.0-8.amzn2.0.6.i686  
    qemu-user-3.1.0-8.amzn2.0.6.i686  
    qemu-user-binfmt-3.1.0-8.amzn2.0.6.i686  
    qemu-user-static-3.1.0-8.amzn2.0.6.i686  
    qemu-system-aarch64-3.1.0-8.amzn2.0.6.i686  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.6.i686  
    qemu-system-x86-3.1.0-8.amzn2.0.6.i686  
    qemu-system-x86-core-3.1.0-8.amzn2.0.6.i686  
    qemu-debuginfo-3.1.0-8.amzn2.0.6.i686  
  
src:  
    qemu-3.1.0-8.amzn2.0.6.src  
  
x86_64:  
    qemu-3.1.0-8.amzn2.0.6.x86_64  
    qemu-common-3.1.0-8.amzn2.0.6.x86_64  
    qemu-guest-agent-3.1.0-8.amzn2.0.6.x86_64  
    qemu-img-3.1.0-8.amzn2.0.6.x86_64  
    ivshmem-tools-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-curl-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-dmg-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-iscsi-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-nfs-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-rbd-3.1.0-8.amzn2.0.6.x86_64  
    qemu-block-ssh-3.1.0-8.amzn2.0.6.x86_64  
    qemu-audio-alsa-3.1.0-8.amzn2.0.6.x86_64  
    qemu-audio-oss-3.1.0-8.amzn2.0.6.x86_64  
    qemu-audio-pa-3.1.0-8.amzn2.0.6.x86_64  
    qemu-audio-sdl-3.1.0-8.amzn2.0.6.x86_64  
    qemu-ui-curses-3.1.0-8.amzn2.0.6.x86_64  
    qemu-ui-gtk-3.1.0-8.amzn2.0.6.x86_64  
    qemu-ui-sdl-3.1.0-8.amzn2.0.6.x86_64  
    qemu-kvm-3.1.0-8.amzn2.0.6.x86_64  
    qemu-kvm-core-3.1.0-8.amzn2.0.6.x86_64  
    qemu-user-3.1.0-8.amzn2.0.6.x86_64  
    qemu-user-binfmt-3.1.0-8.amzn2.0.6.x86_64  
    qemu-user-static-3.1.0-8.amzn2.0.6.x86_64  
    qemu-system-aarch64-3.1.0-8.amzn2.0.6.x86_64  
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.6.x86_64  
    qemu-system-x86-3.1.0-8.amzn2.0.6.x86_64  
    qemu-system-x86-core-3.1.0-8.amzn2.0.6.x86_64  
    qemu-debuginfo-3.1.0-8.amzn2.0.6.x86_64  

Additional References

Red Hat: CVE-2019-15890, CVE-2020-10756

Mitre: CVE-2019-15890, CVE-2020-10756

7.5 High

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

7 High

AI Score

Confidence

High

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.009 Low

EPSS

Percentile

82.5%