Ubuntu Security Notice USN-7094-1

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Ubuntu Security Notice USN-7094-1
November 08, 2024

qemu vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 24.10
– Ubuntu 24.04 LTS
– Ubuntu 22.04 LTS
– Ubuntu 20.04 LTS
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in QEMU.

Software Description:
– qemu: Machine emulator and virtualizer

Details:

It was discovered that QEMU incorrectly handled memory during certain VNC
operations. A remote attacker could possibly use this issue to cause QEMU
to consume resources, resulting in a denial of service. This issue only
affected Ubuntu 14.04 LTS. (CVE-2019-20382)

It was discovered that QEMU incorrectly handled certain memory copy
operations when loading ROM contents. If a user were tricked into running
an untrusted kernel image, a remote attacker could possibly use this issue
to run arbitrary code. This issue only affected Ubuntu 14.04 LTS.
(CVE-2020-13765)

Aviv Sasson discovered that QEMU incorrectly handled Slirp networking. A
remote attacker could use this issue to cause QEMU to crash, resulting in a
denial of service, or possibly execute arbitrary code. This issue only
affected Ubuntu 14.04 LTS. (CVE-2020-1983)

It was discovered that the SLiRP networking implementation of the QEMU
emulator did not properly manage memory under certain circumstances. An
attacker could use this to cause a heap-based buffer overflow or other out-
of-bounds access, which can lead to a denial of service (application crash)
or potential execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS. (CVE-2020-7039)

It was discovered that the SLiRP networking implementation of the QEMU
emulator misuses snprintf return values. An attacker could use this to
cause a denial of service (application crash) or potentially execute
arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2020-8608)

It was discovered that QEMU SLiRP networking incorrectly handled certain
udp packets. An attacker inside a guest could possibly use this issue to
leak sensitive information from the host. This issue only affected
Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2021-3592, CVE-2021-3594)

It was discovered that QEMU had a DMA reentrancy issue, leading to a
use-after-free vulnerability. An attacker could possibly use this issue
to cause a denial of service. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-3019)

It was discovered that QEMU had a flaw in Virtio PCI Bindings, leading
to a triggerable crash via vhost_net_stop. An attacker inside a guest
could possibly use this issue to cause a denial of service. This issue
only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-4693)

It was discovered that QEMU incorrectly handled memory in virtio-sound,
leading to a heap-based buffer overflow. An attacker could possibly use
this issue to cause a denial of service or execute arbitrary code. This
issue only affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-7730)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.10
qemu-system 1:9.0.2+ds-4ubuntu5.1
qemu-system-arm 1:9.0.2+ds-4ubuntu5.1
qemu-system-mips 1:9.0.2+ds-4ubuntu5.1
qemu-system-misc 1:9.0.2+ds-4ubuntu5.1
qemu-system-ppc 1:9.0.2+ds-4ubuntu5.1
qemu-system-s390x 1:9.0.2+ds-4ubuntu5.1
qemu-system-sparc 1:9.0.2+ds-4ubuntu5.1
qemu-system-x86 1:9.0.2+ds-4ubuntu5.1
qemu-system-x86-xen 1:9.0.2+ds-4ubuntu5.1
qemu-system-xen 1:9.0.2+ds-4ubuntu5.1

Ubuntu 24.04 LTS
qemu-system 1:8.2.2+ds-0ubuntu1.4
qemu-system-arm 1:8.2.2+ds-0ubuntu1.4
qemu-system-mips 1:8.2.2+ds-0ubuntu1.4
qemu-system-misc 1:8.2.2+ds-0ubuntu1.4
qemu-system-ppc 1:8.2.2+ds-0ubuntu1.4
qemu-system-s390x 1:8.2.2+ds-0ubuntu1.4
qemu-system-sparc 1:8.2.2+ds-0ubuntu1.4
qemu-system-x86 1:8.2.2+ds-0ubuntu1.4
qemu-system-x86-xen 1:8.2.2+ds-0ubuntu1.4
qemu-system-xen 1:8.2.2+ds-0ubuntu1.4

Ubuntu 22.04 LTS
qemu 1:6.2+dfsg-2ubuntu6.24
qemu-system 1:6.2+dfsg-2ubuntu6.24
qemu-system-arm 1:6.2+dfsg-2ubuntu6.24
qemu-system-mips 1:6.2+dfsg-2ubuntu6.24
qemu-system-misc 1:6.2+dfsg-2ubuntu6.24
qemu-system-ppc 1:6.2+dfsg-2ubuntu6.24
qemu-system-s390x 1:6.2+dfsg-2ubuntu6.24
qemu-system-sparc 1:6.2+dfsg-2ubuntu6.24
qemu-system-x86 1:6.2+dfsg-2ubuntu6.24
qemu-system-x86-microvm 1:6.2+dfsg-2ubuntu6.24
qemu-system-x86-xen 1:6.2+dfsg-2ubuntu6.24

Ubuntu 20.04 LTS
qemu 1:4.2-3ubuntu6.30
qemu-system 1:4.2-3ubuntu6.30
qemu-system-arm 1:4.2-3ubuntu6.30
qemu-system-mips 1:4.2-3ubuntu6.30
qemu-system-misc 1:4.2-3ubuntu6.30
qemu-system-ppc 1:4.2-3ubuntu6.30
qemu-system-s390x 1:4.2-3ubuntu6.30
qemu-system-sparc 1:4.2-3ubuntu6.30
qemu-system-x86 1:4.2-3ubuntu6.30
qemu-system-x86-microvm 1:4.2-3ubuntu6.30
qemu-system-x86-xen 1:4.2-3ubuntu6.30

Ubuntu 18.04 LTS
qemu 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-arm 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-mips 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-misc 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-ppc 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-s390x 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-sparc 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro
qemu-system-x86 1:2.11+dfsg-1ubuntu7.42+esm2
Available with Ubuntu Pro

Ubuntu 16.04 LTS
qemu 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-aarch64 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-arm 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-common 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-mips 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-misc 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-ppc 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-s390x 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-sparc 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro
qemu-system-x86 1:2.5+dfsg-5ubuntu10.51+esm3
Available with Ubuntu Pro

Ubuntu 14.04 LTS
qemu 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-aarch64 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-arm 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-common 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-mips 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-misc 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-ppc 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-sparc 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro
qemu-system-x86 2.0.0+dfsg-2ubuntu1.47+esm4
Available with Ubuntu Pro

After a standard system update you need to restart all QEMU virtual
machines to make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7094-1
CVE-2019-20382, CVE-2020-13765, CVE-2020-1983, CVE-2020-7039,
CVE-2020-8608, CVE-2021-3592, CVE-2021-3594, CVE-2023-3019,
CVE-2024-4693, CVE-2024-7730,
https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2084210

Package Information:
https://launchpad.net/ubuntu/+source/qemu/1:9.0.2+ds-4ubuntu5.1
https://launchpad.net/ubuntu/+source/qemu/1:8.2.2+ds-0ubuntu1.4
https://launchpad.net/ubuntu/+source/qemu/1:6.2+dfsg-2ubuntu6.24
https://launchpad.net/ubuntu/+source/qemu/1:4.2-3ubuntu6.30