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Related Vulnerabilities: CVE-2018-20815 CVE-2019-12155 CVE-2019-5008 CVE-2019-9824

A heap buffer overflow issue was found in the load_device_tree() function of QEMU, which is invoked to load a device tree blob at boot time. It occurs due to device tree size manipulation before buffer allocation, which could overflow a signed int type. A user/process could use this flaw to potentially execute arbitrary code on a host system with privileges of the QEMU process. (CVE-2018-20815) hw/sparc64/sun4u.c in QEMU 3.1.50 is vulnerable to a NULL pointer dereference, which allows the attacker to cause a denial of service via a device driver. (CVE-2019-5008) Slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824) qxl: null pointer dereference while releasing spice resources (CVE-2019-12155)

Source

ALAS2-2019-1248

Amazon Linux 2 Security Advisory: ALAS-2019-1248
Advisory Release Date: 2019-07-18 17:45 Pacific
Advisory Updated Date: 2019-07-22 16:38 Pacific

Severity: Important

References: CVE-2018-20815 CVE-2019-12155 CVE-2019-5008 CVE-2019-9824

Issue Overview:

A heap buffer overflow issue was found in the load_device_tree() function of QEMU, which is invoked to load a device tree blob at boot time. It occurs due to device tree size manipulation before buffer allocation, which could overflow a signed int type. A user/process could use this flaw to potentially execute arbitrary code on a host system with privileges of the QEMU process. (CVE-2018-20815)

hw/sparc64/sun4u.c in QEMU 3.1.50 is vulnerable to a NULL pointer dereference, which allows the attacker to cause a denial of service via a device driver. (CVE-2019-5008)

Slirp: information leakage in tcp_emu() due to uninitialized stack variables (CVE-2019-9824)

qxl: null pointer dereference while releasing spice resources (CVE-2019-12155)

Affected Packages:

qemu

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

New Packages:

aarch64:
    qemu-3.1.0-7.amzn2.0.1.aarch64
    qemu-common-3.1.0-7.amzn2.0.1.aarch64
    qemu-guest-agent-3.1.0-7.amzn2.0.1.aarch64
    qemu-img-3.1.0-7.amzn2.0.1.aarch64
    ivshmem-tools-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-curl-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-dmg-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-iscsi-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-nfs-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-rbd-3.1.0-7.amzn2.0.1.aarch64
    qemu-block-ssh-3.1.0-7.amzn2.0.1.aarch64
    qemu-audio-alsa-3.1.0-7.amzn2.0.1.aarch64
    qemu-audio-oss-3.1.0-7.amzn2.0.1.aarch64
    qemu-audio-pa-3.1.0-7.amzn2.0.1.aarch64
    qemu-audio-sdl-3.1.0-7.amzn2.0.1.aarch64
    qemu-ui-curses-3.1.0-7.amzn2.0.1.aarch64
    qemu-ui-gtk-3.1.0-7.amzn2.0.1.aarch64
    qemu-ui-sdl-3.1.0-7.amzn2.0.1.aarch64
    qemu-kvm-3.1.0-7.amzn2.0.1.aarch64
    qemu-kvm-core-3.1.0-7.amzn2.0.1.aarch64
    qemu-user-3.1.0-7.amzn2.0.1.aarch64
    qemu-user-binfmt-3.1.0-7.amzn2.0.1.aarch64
    qemu-user-static-3.1.0-7.amzn2.0.1.aarch64
    qemu-system-aarch64-3.1.0-7.amzn2.0.1.aarch64
    qemu-system-aarch64-core-3.1.0-7.amzn2.0.1.aarch64
    qemu-system-x86-3.1.0-7.amzn2.0.1.aarch64
    qemu-system-x86-core-3.1.0-7.amzn2.0.1.aarch64
    qemu-debuginfo-3.1.0-7.amzn2.0.1.aarch64

i686:
    qemu-3.1.0-7.amzn2.0.1.i686
    qemu-common-3.1.0-7.amzn2.0.1.i686
    qemu-guest-agent-3.1.0-7.amzn2.0.1.i686
    qemu-img-3.1.0-7.amzn2.0.1.i686
    ivshmem-tools-3.1.0-7.amzn2.0.1.i686
    qemu-block-curl-3.1.0-7.amzn2.0.1.i686
    qemu-block-dmg-3.1.0-7.amzn2.0.1.i686
    qemu-block-iscsi-3.1.0-7.amzn2.0.1.i686
    qemu-block-nfs-3.1.0-7.amzn2.0.1.i686
    qemu-block-ssh-3.1.0-7.amzn2.0.1.i686
    qemu-audio-alsa-3.1.0-7.amzn2.0.1.i686
    qemu-audio-oss-3.1.0-7.amzn2.0.1.i686
    qemu-audio-pa-3.1.0-7.amzn2.0.1.i686
    qemu-audio-sdl-3.1.0-7.amzn2.0.1.i686
    qemu-ui-curses-3.1.0-7.amzn2.0.1.i686
    qemu-ui-gtk-3.1.0-7.amzn2.0.1.i686
    qemu-ui-sdl-3.1.0-7.amzn2.0.1.i686
    qemu-kvm-3.1.0-7.amzn2.0.1.i686
    qemu-kvm-core-3.1.0-7.amzn2.0.1.i686
    qemu-user-3.1.0-7.amzn2.0.1.i686
    qemu-user-binfmt-3.1.0-7.amzn2.0.1.i686
    qemu-user-static-3.1.0-7.amzn2.0.1.i686
    qemu-system-aarch64-3.1.0-7.amzn2.0.1.i686
    qemu-system-aarch64-core-3.1.0-7.amzn2.0.1.i686
    qemu-system-x86-3.1.0-7.amzn2.0.1.i686
    qemu-system-x86-core-3.1.0-7.amzn2.0.1.i686
    qemu-debuginfo-3.1.0-7.amzn2.0.1.i686

src:
    qemu-3.1.0-7.amzn2.0.1.src

x86_64:
    qemu-3.1.0-7.amzn2.0.1.x86_64
    qemu-common-3.1.0-7.amzn2.0.1.x86_64
    qemu-guest-agent-3.1.0-7.amzn2.0.1.x86_64
    qemu-img-3.1.0-7.amzn2.0.1.x86_64
    ivshmem-tools-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-curl-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-dmg-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-iscsi-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-nfs-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-rbd-3.1.0-7.amzn2.0.1.x86_64
    qemu-block-ssh-3.1.0-7.amzn2.0.1.x86_64
    qemu-audio-alsa-3.1.0-7.amzn2.0.1.x86_64
    qemu-audio-oss-3.1.0-7.amzn2.0.1.x86_64
    qemu-audio-pa-3.1.0-7.amzn2.0.1.x86_64
    qemu-audio-sdl-3.1.0-7.amzn2.0.1.x86_64
    qemu-ui-curses-3.1.0-7.amzn2.0.1.x86_64
    qemu-ui-gtk-3.1.0-7.amzn2.0.1.x86_64
    qemu-ui-sdl-3.1.0-7.amzn2.0.1.x86_64
    qemu-kvm-3.1.0-7.amzn2.0.1.x86_64
    qemu-kvm-core-3.1.0-7.amzn2.0.1.x86_64
    qemu-user-3.1.0-7.amzn2.0.1.x86_64
    qemu-user-binfmt-3.1.0-7.amzn2.0.1.x86_64
    qemu-user-static-3.1.0-7.amzn2.0.1.x86_64
    qemu-system-aarch64-3.1.0-7.amzn2.0.1.x86_64
    qemu-system-aarch64-core-3.1.0-7.amzn2.0.1.x86_64
    qemu-system-x86-3.1.0-7.amzn2.0.1.x86_64
    qemu-system-x86-core-3.1.0-7.amzn2.0.1.x86_64
    qemu-debuginfo-3.1.0-7.amzn2.0.1.x86_64

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