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Alibaba Cloud Linux 3 : 0058: virt:rhel and virt-devel:rhel (ALINUX3-SA-2021:0058)

medium Nessus Plugin ID 236490

Synopsis

The remote Alibaba Cloud Linux host is missing one or more security updates.

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2021:0058 advisory.

 Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

 CVE-2020-13754:
 hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.

 CVE-2020-27617:
 eth_get_gso_type in net/eth.c in QEMU 4.2.1 allows guest OS users to trigger an assertion failure. A guest can crash the QEMU process via packet data that lacks a valid Layer 3 protocol.

 CVE-2021-20221:
 An out-of-bounds heap buffer access issue was found in the ARM Generic Interrupt Controller emulator of QEMU up to and including qemu 4.2.0on aarch64 platform. The issue occurs because while writing an interrupt ID to the controller memory area, it is not masked to be 4 bits wide. It may lead to the said issue while updating controller state fields and their subsequent processing. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.

 CVE-2021-3416:
 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-2021-3504:
 A flaw was found in the hivex library in versions before 1.3.20. It is caused due to a lack of bounds check within the hivex_open function. An attacker could input a specially crafted Windows Registry (hive) file which would cause hivex to read memory beyond its normal bounds or cause the program to crash. The highest threat from this vulnerability is to system availability.

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

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

http://mirrors.aliyun.com/alinux/3/cve/alinux3-sa-20210058.xml

Plugin Details

Severity: Medium

ID: 236490

File Name: alinux3_sa_2021-0058.nasl

Version: 1.1

Type: local

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:P

CVSS Score Source: CVE-2021-3504

CVSS v3

Risk Factor: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2020-13754

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ocaml-hivex-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ocaml-hivex-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:perl-hivex, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:hivex, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-hivex, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:hivex-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-hivex-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-hivex-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:hivex-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ruby-hivex, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:ocaml-hivex, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:hivex-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:perl-hivex-debuginfo

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/Alibaba/release, Host/Alibaba/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/12/2021

Vulnerability Publication Date: 6/2/2020

Reference Information

CVE: CVE-2020-13754, CVE-2020-27617, CVE-2021-20221, CVE-2021-3416, CVE-2021-3504