CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
Percentile
95.9%
The version of AOS installed on the remote host is prior to 6.0.1.6. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-6.0.1.6 advisory.
A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries platform) a root like local user could use this flaw to further increase their privileges to that of a running kernel. (CVE-2020-27777)
A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)
In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and 9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11 of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR triggering the flaw described above, the named process will terminate due to a failed assertion the next time the transferred secondary zone is refreshed. (CVE-2021-25214)
BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements, allowing them to execute arbitrary code within the kernel context. This affects arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. (CVE-2021-29154)
An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.
(CVE-2021-29650)
net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI controller. (CVE-2021-32399)
Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding;
and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
(CVE-2021-33037)
A flaw was found in the Routing decision classifier in the Linux kernel’s Traffic Control networking subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.
This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(164576);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/23");
script_cve_id(
"CVE-2020-27777",
"CVE-2021-3715",
"CVE-2021-22555",
"CVE-2021-25214",
"CVE-2021-29154",
"CVE-2021-29650",
"CVE-2021-32399",
"CVE-2021-33037"
);
script_name(english:"Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-6.0.1.6)");
script_set_attribute(attribute:"synopsis", value:
"The Nutanix AOS host is affected by multiple vulnerabilities .");
script_set_attribute(attribute:"description", value:
"The version of AOS installed on the remote host is prior to 6.0.1.6. It is, therefore, affected by multiple
vulnerabilities as referenced in the NXSA-AOS-6.0.1.6 advisory.
- A flaw was found in the way RTAS handled memory accesses in userspace to kernel communication. On a locked
down (usually due to Secure Boot) guest system running on top of PowerVM or KVM hypervisors (pseries
platform) a root like local user could use this flaw to further increase their privileges to that of a
running kernel. (CVE-2020-27777)
- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name
space (CVE-2021-22555)
- In BIND 9.8.5 -> 9.8.8, 9.9.3 -> 9.11.29, 9.12.0 -> 9.16.13, and versions BIND 9.9.3-S1 -> 9.11.29-S1 and
9.16.8-S1 -> 9.16.13-S1 of BIND 9 Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.11
of the BIND 9.17 development branch, when a vulnerable version of named receives a malformed IXFR
triggering the flaw described above, the named process will terminate due to a failed assertion the next
time the transferred secondary zone is refreshed. (CVE-2021-25214)
- BPF JIT compilers in the Linux kernel through 5.11.12 have incorrect computation of branch displacements,
allowing them to execute arbitrary code within the kernel context. This affects
arch/x86/net/bpf_jit_comp.c and arch/x86/net/bpf_jit_comp32.c. (CVE-2021-29154)
- An issue was discovered in the Linux kernel before 5.11.11. The netfilter subsystem allows attackers to
cause a denial of service (panic) because net/netfilter/x_tables.c and include/linux/netfilter/x_tables.h
lack a full memory barrier upon the assignment of a new table value, aka CID-175e476b8cdf.
(CVE-2021-29650)
- net/bluetooth/hci_request.c in the Linux kernel through 5.12.2 has a race condition for removal of the HCI
controller. (CVE-2021-32399)
- Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP
transfer-encoding request header in some circumstances leading to the possibility to request smuggling
when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if
the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding;
and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.
(CVE-2021-33037)
- A flaw was found in the Routing decision classifier in the Linux kernel's Traffic Control networking
subsystem in the way it handled changing of classification filters, leading to a use-after-free condition.
This flaw allows unprivileged local users to escalate their privileges on the system. The highest threat
from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3715)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
# https://portal.nutanix.com/page/documents/security-advisories/release-advisories/details?id=NXSA-AOS-6.0.1.6
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d4b39a0a");
script_set_attribute(attribute:"solution", value:
"Update the Nutanix AOS software to recommended version.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-3715");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploited_by_malware", value:"true");
script_set_attribute(attribute:"metasploit_name", value:'Netfilter x_tables Heap OOB Write Privilege Escalation');
script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/12/10");
script_set_attribute(attribute:"patch_publication_date", value:"2022/08/24");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/01");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:nutanix:aos");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Misc.");
script_copyright(english:"This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("nutanix_collect.nasl");
script_require_keys("Host/Nutanix/Data/lts", "Host/Nutanix/Data/Service", "Host/Nutanix/Data/Version", "Host/Nutanix/Data/arch");
exit(0);
}
include('vcf.inc');
include('vcf_extras.inc');
var app_info = vcf::nutanix::get_app_info();
var constraints = [
{ 'fixed_version' : '6.0.1.6', 'product' : 'AOS', 'fixed_display' : 'Upgrade the AOS install to 6.0.1.6 or higher.', 'lts' : FALSE },
{ 'fixed_version' : '6.0.1.6', 'product' : 'NDFS', 'fixed_display' : 'Upgrade the AOS install to 6.0.1.6 or higher.', 'lts' : FALSE }
];
vcf::nutanix::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_HOLE);
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27777
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22555
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25214
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29154
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29650
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-32399
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33037
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3715
www.nessus.org/u?d4b39a0a
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS3
Attack Vector
ADJACENT
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
EPSS
Percentile
95.9%