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ALAS2-2023-2148

Related Vulnerabilities: CVE-2021-3416   CVE-2023-0330   CVE-2023-2861  

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario. (CVE-2021-3416) There is a vulnerability in the lsi53c895a device which affects the latest version of qemu. The carefully designed PoC can repeatedly trigger DMA writes but does not limit the addresses written to the DMA, resulting in reentrancy issues and eventually overflow. (CVE-2023-0330) 9pfs: prevent opening special files: A malicious client could potentially escape from the exported 9p tree by creating and opening a device file on host side. (CVE-2023-2861)

Source

ALAS2-2023-2148

Amazon Linux 2 Security Advisory: ALAS-2023-2148
Advisory Release Date: 2023-07-17 17:40 Pacific
Advisory Updated Date: 2023-07-19 22:18 Pacific
Severity: Medium
Issue Overview:

A potential stack overflow via infinite loop issue was found in various NIC emulators of QEMU in versions up to and including 5.2.0. The issue occurs in loopback mode of a NIC wherein reentrant DMA checks get bypassed. A guest user/process may use this flaw to consume CPU cycles or crash the QEMU process on the host resulting in DoS scenario. (CVE-2021-3416)

There is a vulnerability in the lsi53c895a device which affects the latest version of qemu. The carefully designed PoC can repeatedly trigger DMA writes but does not limit the addresses written to the DMA, resulting in reentrancy issues and eventually overflow. (CVE-2023-0330)

9pfs: prevent opening special files: A malicious client could potentially escape from the exported 9p tree by creating and opening a device file on host side. (CVE-2023-2861)


Affected Packages:

qemu


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

New Packages:
aarch64:
    qemu-3.1.0-8.amzn2.0.11.aarch64
    qemu-common-3.1.0-8.amzn2.0.11.aarch64
    qemu-guest-agent-3.1.0-8.amzn2.0.11.aarch64
    qemu-img-3.1.0-8.amzn2.0.11.aarch64
    ivshmem-tools-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-curl-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-dmg-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-nfs-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-rbd-3.1.0-8.amzn2.0.11.aarch64
    qemu-block-ssh-3.1.0-8.amzn2.0.11.aarch64
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.aarch64
    qemu-audio-oss-3.1.0-8.amzn2.0.11.aarch64
    qemu-audio-pa-3.1.0-8.amzn2.0.11.aarch64
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.aarch64
    qemu-ui-curses-3.1.0-8.amzn2.0.11.aarch64
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.aarch64
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.aarch64
    qemu-kvm-3.1.0-8.amzn2.0.11.aarch64
    qemu-kvm-core-3.1.0-8.amzn2.0.11.aarch64
    qemu-user-3.1.0-8.amzn2.0.11.aarch64
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.aarch64
    qemu-user-static-3.1.0-8.amzn2.0.11.aarch64
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.aarch64
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.aarch64
    qemu-system-x86-3.1.0-8.amzn2.0.11.aarch64
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.aarch64
    qemu-debuginfo-3.1.0-8.amzn2.0.11.aarch64

i686:
    qemu-3.1.0-8.amzn2.0.11.i686
    qemu-common-3.1.0-8.amzn2.0.11.i686
    qemu-guest-agent-3.1.0-8.amzn2.0.11.i686
    qemu-img-3.1.0-8.amzn2.0.11.i686
    ivshmem-tools-3.1.0-8.amzn2.0.11.i686
    qemu-block-curl-3.1.0-8.amzn2.0.11.i686
    qemu-block-dmg-3.1.0-8.amzn2.0.11.i686
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.i686
    qemu-block-nfs-3.1.0-8.amzn2.0.11.i686
    qemu-block-ssh-3.1.0-8.amzn2.0.11.i686
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.i686
    qemu-audio-oss-3.1.0-8.amzn2.0.11.i686
    qemu-audio-pa-3.1.0-8.amzn2.0.11.i686
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.i686
    qemu-ui-curses-3.1.0-8.amzn2.0.11.i686
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.i686
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.i686
    qemu-kvm-3.1.0-8.amzn2.0.11.i686
    qemu-kvm-core-3.1.0-8.amzn2.0.11.i686
    qemu-user-3.1.0-8.amzn2.0.11.i686
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.i686
    qemu-user-static-3.1.0-8.amzn2.0.11.i686
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.i686
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.i686
    qemu-system-x86-3.1.0-8.amzn2.0.11.i686
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.i686
    qemu-debuginfo-3.1.0-8.amzn2.0.11.i686

src:
    qemu-3.1.0-8.amzn2.0.11.src

x86_64:
    qemu-3.1.0-8.amzn2.0.11.x86_64
    qemu-common-3.1.0-8.amzn2.0.11.x86_64
    qemu-guest-agent-3.1.0-8.amzn2.0.11.x86_64
    qemu-img-3.1.0-8.amzn2.0.11.x86_64
    ivshmem-tools-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-curl-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-dmg-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-iscsi-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-nfs-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-rbd-3.1.0-8.amzn2.0.11.x86_64
    qemu-block-ssh-3.1.0-8.amzn2.0.11.x86_64
    qemu-audio-alsa-3.1.0-8.amzn2.0.11.x86_64
    qemu-audio-oss-3.1.0-8.amzn2.0.11.x86_64
    qemu-audio-pa-3.1.0-8.amzn2.0.11.x86_64
    qemu-audio-sdl-3.1.0-8.amzn2.0.11.x86_64
    qemu-ui-curses-3.1.0-8.amzn2.0.11.x86_64
    qemu-ui-gtk-3.1.0-8.amzn2.0.11.x86_64
    qemu-ui-sdl-3.1.0-8.amzn2.0.11.x86_64
    qemu-kvm-3.1.0-8.amzn2.0.11.x86_64
    qemu-kvm-core-3.1.0-8.amzn2.0.11.x86_64
    qemu-user-3.1.0-8.amzn2.0.11.x86_64
    qemu-user-binfmt-3.1.0-8.amzn2.0.11.x86_64
    qemu-user-static-3.1.0-8.amzn2.0.11.x86_64
    qemu-system-aarch64-3.1.0-8.amzn2.0.11.x86_64
    qemu-system-aarch64-core-3.1.0-8.amzn2.0.11.x86_64
    qemu-system-x86-3.1.0-8.amzn2.0.11.x86_64
    qemu-system-x86-core-3.1.0-8.amzn2.0.11.x86_64
    qemu-debuginfo-3.1.0-8.amzn2.0.11.x86_64

Additional References

Red Hat: CVE-2021-3416, CVE-2023-0330, CVE-2023-2861

Mitre: CVE-2021-3416, CVE-2023-0330, CVE-2023-2861

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