Ubuntu: Security Advisory for qemu (USN-5010-1)

Published: 2021-07-16 03:00:59
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/AC:L/Au:N/C:P/I:P/A:P

Summary:
The remote host is missing an update for the 'qemu' Linux Distribution Package(s) announced via the USN-5010-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Lei Sun discovered that QEMU incorrectly handled certain MMIO operations. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-15469) Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.04. (CVE-2020-29443) Cheolwoo Myung discovered that QEMU incorrectly handled SCSI device emulation. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2020-35504, CVE-2020-35505, CVE-2021-3392) Alex Xu discovered that QEMU incorrectly handled the virtio-fs shared file system daemon. An attacker inside the guest could possibly use this issue to read and write to host devices. This issue only affected Ubuntu 20.10. (CVE-2020-35517) It was discovered that QEMU incorrectly handled ARM Generic Interrupt Controller emulation. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2021-20221) Alexander Bulekov, Cheolwoo Myung, Sergej Schumilo, Cornelius Aschermann, and Simon Werner discovered that QEMU incorrectly handled e1000 device emulation. An attacker inside the guest could possibly use this issue to cause QEMU to hang, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2021-20257) It was discovered that QEMU incorrectly handled SDHCI controller emulation. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. In the default installation, when QEMU is used in combination with libvirt, attackers would be isolated by the libvirt AppArmor profile. (CVE-2021-3409) It was discovered that QEMU incorrectly handled certain NIC emulation devices. An attacker inside the guest could possibly use this issue to cause QEMU to hang or crash, resulting in a denial of service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2021-3416) Remy Noel discovered that QEMU incorrectly handled the USB redirector device. An attacker inside the guest could possibly use this issue to cause QEMU to consume resources, resulting in a denial of service. (CVE-2021-3527) It was discovered that QEMU incorrectly handled the virtio vhost-user GPU device. An ... Description truncated. Please see the references for more information.

Affected Versions:
'qemu' Linux Distribution Package(s) on Ubuntu 20.10, Ubuntu 20.04 LTS, Ubuntu 18.04 LTS.

Recommendations:
Please install the updated Linux Distribution Package(s).

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2020-15469
https://nvd.nist.gov/vuln/detail/CVE-2020-29443
https://nvd.nist.gov/vuln/detail/CVE-2020-35504
https://nvd.nist.gov/vuln/detail/CVE-2020-35505
https://nvd.nist.gov/vuln/detail/CVE-2021-3392
https://nvd.nist.gov/vuln/detail/CVE-2020-35517
https://nvd.nist.gov/vuln/detail/CVE-2021-20221
https://nvd.nist.gov/vuln/detail/CVE-2021-20257
https://nvd.nist.gov/vuln/detail/CVE-2021-3409
https://nvd.nist.gov/vuln/detail/CVE-2021-3416
https://nvd.nist.gov/vuln/detail/CVE-2021-3527
https://nvd.nist.gov/vuln/detail/CVE-2021-3544
https://nvd.nist.gov/vuln/detail/CVE-2021-3545
https://nvd.nist.gov/vuln/detail/CVE-2021-3546
https://nvd.nist.gov/vuln/detail/CVE-2021-3582
https://nvd.nist.gov/vuln/detail/CVE-2021-3607
https://nvd.nist.gov/vuln/detail/CVE-2021-3608
https://nvd.nist.gov/vuln/detail/CVE-2021-3592
https://nvd.nist.gov/vuln/detail/CVE-2021-3593
https://nvd.nist.gov/vuln/detail/CVE-2021-3594
https://nvd.nist.gov/vuln/detail/CVE-2021-3595

References:


https://lists.ubuntu.com/archives/ubuntu-security-announce/2021-July/006102.html

Severity
Medium
CVSS Score
4.6
Published
2021-07-16
Modified
2021-07-26
Category
Ubuntu Local Security Checks

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