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Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-6.0.2.5)

high Nessus Plugin ID 164564

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Synopsis

The Nutanix AOS host is affected by multiple vulnerabilities .

Description

The version of AOS installed on the remote host is prior to 6.0.2.5. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-6.0.2.5 advisory.

 - xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document. (CVE-2016-4658)

 - NSS (Network Security Services) versions prior to 3.73 or 3.68.1 ESR are vulnerable to a heap overflow when handling DER-encoded DSA or RSA-PSS signatures. Applications using NSS for handling signatures encoded within CMS, S/MIME, PKCS \#7, or PKCS \#12 are likely to be impacted. Applications using NSS for certificate validation or other TLS, X.509, OCSP or CRL functionality may be impacted, depending on how they configure NSS. *Note: This vulnerability does NOT impact Mozilla Firefox.* However, email clients and PDF viewers that use NSS for signature verification, such as Thunderbird, LibreOffice, Evolution and Evince are believed to be impacted. This vulnerability affects NSS < 3.73 and NSS < 3.68.1.
 (CVE-2021-43527)

 - An issue was discovered in Linux: KVM through Improper handling of VM_IO|VM_PFNMAP vmas in KVM can bypass RO checks and can lead to pages being freed while still accessible by the VMM and guest. This allows users with the ability to start and control a VM to read/write random pages of memory and can result in local privilege escalation. (CVE-2021-22543)

 - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the int_ctl field, this issue could allow a malicious L1 to enable AVIC support (Advanced Virtual Interrupt Controller) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. This flaw affects Linux kernel versions prior to 5.14-rc7. (CVE-2021-3653)

 - A flaw was found in the KVM's AMD code for supporting SVM nested virtualization. The flaw occurs when processing the VMCB (virtual machine control block) provided by the L1 guest to spawn/handle a nested guest (L2). Due to improper validation of the virt_ext field, this issue could allow a malicious L1 to disable both VMLOAD/VMSAVE intercepts and VLS (Virtual VMLOAD/VMSAVE) for the L2 guest. As a result, the L2 guest would be allowed to read/write physical pages of the host, resulting in a crash of the entire system, leak of sensitive data or potential guest-to-host escape. (CVE-2021-3656)

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 Nutanix AOS software to the recommended version. Before upgrading: if this cluster is registered with Prism Central, ensure that Prism Central has been upgraded first to a compatible version. Refer to the Software Product Interoperability page on the Nutanix portal.

See Also

http://www.nessus.org/u?0d180df0

Plugin Details

Severity: High

ID: 164564

File Name: nutanix_NXSA-AOS-6_0_2_5.nasl

Version: 1.13

Type: local

Family: Misc.

Published: 9/1/2022

Updated: 2/17/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.0

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

CVSS Score Source: CVE-2016-4658

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

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

CVSS Score Source: CVE-2021-43527

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 8.7

Threat Vector: CVSS:4.0/E:A

Vector: CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L

CVSS Score Source: CVE-2021-22543

Vulnerability Information

CPE: cpe:/o:nutanix:aos

Required KB Items: Host/Nutanix/Data/lts, Host/Nutanix/Data/Service, Host/Nutanix/Data/Version, Host/Nutanix/Data/arch

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/25/2022

Vulnerability Publication Date: 9/7/2016

CISA Known Exploited Vulnerability Due Dates: 12/15/2021, 5/3/2022, 5/22/2023

Exploitable With

CANVAS (CANVAS)

Metasploit (SaltStack Salt Master/Minion Unauthenticated RCE)

Reference Information

CVE: CVE-2016-4658, CVE-2020-11651, CVE-2020-11652, CVE-2020-36385, CVE-2021-20271, CVE-2021-22543, CVE-2021-23840, CVE-2021-23841, CVE-2021-30640, CVE-2021-35550, CVE-2021-35556, CVE-2021-35559, CVE-2021-35561, CVE-2021-35564, CVE-2021-35565, CVE-2021-35567, CVE-2021-35578, CVE-2021-35586, CVE-2021-35588, CVE-2021-35603, CVE-2021-3653, CVE-2021-3656, CVE-2021-37576, CVE-2021-37750, CVE-2021-40438, CVE-2021-41617, CVE-2021-42340, CVE-2021-42574, CVE-2021-43527, CVE-2021-45046