It was discovered that the update for the virt:rhel module in the RHSA-2020:4676 (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3 failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059). CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page: https://access.redhat.com/security/cve/CVE-2020-10756.

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2021-1660:01 advisory.

    * QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm  (CVE-2021-20295)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:1064 advisory.

  - It was discovered that the update for the virt:rhel module in the RHSA-2020:4676     (https://access.redhat.com/errata/RHSA-2020:4676) erratum released as part of Red Hat Enterprise Linux 8.3     failed to include the fix for the qemu-kvm component issue CVE-2020-10756, which was previously corrected     in virt:rhel/qemu-kvm via erratum RHSA-2020:4059 (https://access.redhat.com/errata/RHSA-2020:4059).
    CVE-2021-20295 was assigned to that Red Hat specific security regression. For more details about the     original security issue CVE-2020-10756, refer to bug 1835986 or the CVE page:
    https://access.redhat.com/security/cve/CVE-2020-10756. (CVE-2021-20295)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has packages installed that are affected by a vulnerability as referenced in the ALSA-2021:1064 advisory.

    * QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in AlmaLinux (CVE-2021-20295)

Tenable has extracted the preceding description block directly from the AlmaLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2021-1064 advisory.

    libvirt     [6.0.0-28.1.0.1]
    - Add runtime deps for pkg librbd1 >= 1:10.2.5 (Keshav Sharma)

    qemu-kvm     [4.2.0-34.el8_3.5]
    - kvm-Drop-bogus-IPv6-messages.patch [bz#1939493]
    - Resolves: bz#1939493       (CVE-2020-10756 virt:rhel/qemu-kvm: QEMU: slirp: networking out-of-bounds read information disclosure     vulnerability [rhel-8.3.0.z] [rhel-8.3.0.z])

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:1064 advisory.

    Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware     platforms. The virt:rhel module contains packages which provide user-space components used to run virtual     machines using KVM. The packages also provide APIs for managing and interacting with the virtualized     systems.

    Security Fix(es):

    * QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3     (CVE-2021-20295)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the CESA-2021:1064 advisory.

  - QEMU: Regression of CVE-2020-10756 fix in virt:rhel/qemu-kvm in Red Hat Enterprise Linux 8.3     (CVE-2021-20295)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
294332	MiracleLinux 8 : virt:rhel and virt-devel:rhel (AXSA:2021-1660:01)	Nessus	Miracle Linux Local Security Checks	medium
184488	Rocky Linux 8 : virt:rhel and virt-devel:rhel (RLSA-2021:1064)	Nessus	Rocky Linux Local Security Checks	medium
157487	AlmaLinux 8 : virt:rhel and virt-devel:rhel (ALSA-2021:1064)	Nessus	Alma Linux Local Security Checks	medium
148421	Oracle Linux 8 : virt:ol / and / virt-devel:rhel (ELSA-2021-1064)	Nessus	Oracle Linux Local Security Checks	medium
148319	RHEL 8 : virt:rhel and virt-devel:rhel (RHSA-2021:1064)	Nessus	Red Hat Local Security Checks	medium
148318	CentOS 8 : virt:rhel and virt-devel:rhel (CESA-2021:1064)	Nessus	CentOS Local Security Checks	medium

Detections

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CVE-2021-20295

medium

Tenable Plugins

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medium

medium

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medium