Oracle Linux 7 : qemu (ELSA-2022-9432)
high Nessus Plugin ID 161622
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Synopsis
The remote Oracle Linux host is missing one or more security updates.Description
The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2022-9432 advisory.- A use-after-free vulnerability was found in the virtio-net device of QEMU. It could occur when the descriptor's address belongs to the non direct access region, due to num_buffers being set after the virtqueue elem has been unmapped. A malicious guest could use this flaw to crash QEMU, resulting in a denial of service condition, or potentially execute code on the host with the privileges of the QEMU process. (CVE-2021-3748)
- A flaw was found in the virtio-net device of QEMU. This flaw was inadvertently introduced with the fix for CVE-2021-3748, which forgot to unmap the cached virtqueue elements on error, leading to memory leakage and other unexpected results. Affected QEMU version: 6.2.0. (CVE-2022-26353)
- A flaw was found in the vhost-vsock device of QEMU. In case of error, an invalid element was not detached from the virtqueue before freeing its memory, leading to memory leakage and other unexpected results.
Affected QEMU versions <= 6.2.0. (CVE-2022-26354)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the affected packages.See Also
Plugin Details
Severity: High
ID: 161622
File Name: oraclelinux_ELSA-2022-9432.nasl
Version: 1.3
Type: local
Agent: unix
Published: 5/27/2022
Updated: 1/9/2023
Supported Sensors: Frictionless Assessment Agent, Nessus Agent
Risk Information
VPR
Risk Factor: High
Score: 7.3
CVSS v2
Risk Factor: Medium
Base Score: 6.9
Temporal Score: 5.1
Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C
Temporal Vector: CVSS2#E:U/RL:OF/RC:C
CVSS Score Source: CVE-2021-3748
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:2.3:o:oracle:linux:7:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-img:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-kvm:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-kvm-core:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-block-gluster:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-block-iscsi:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-block-rbd:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-common:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-system-x86:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-system-x86-core:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:ivshmem-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-system-aarch64:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:qemu-system-aarch64-core:*:*:*:*:*:*:*
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux
Exploit Ease: No known exploits are available
Patch Publication Date: 5/26/2022
Vulnerability Publication Date: 3/16/2022