CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
82.9%
The remote Ubuntu 23.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6344-1 advisory.
Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-21255)
It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-2898)
It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in certain situations. A local attacker could use this to cause a denial of service (kernel deadlock).
(CVE-2023-31084)
Quentin Minster discovered that the KSMBD implementation in the Linux kernel did not properly handle session setup requests. A remote attacker could possibly use this to cause a denial of service (memory exhaustion). (CVE-2023-32247)
Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling sessions operations. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252, CVE-2023-32257)
It was discovered that a race condition existed in the KSMBD implementation in the Linux kernel when handling session connections, leading to a use- after-free vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32258)
It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes in certain operations, leading to an out-of- bounds read vulnerability. A remote attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38426, CVE-2023-38428)
It was discovered that the KSMBD implementation in the Linux kernel did not properly calculate the size of certain buffers. A remote attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-38429)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
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.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6344-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(180558);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id(
"CVE-2023-2898",
"CVE-2023-21255",
"CVE-2023-31084",
"CVE-2023-32247",
"CVE-2023-32250",
"CVE-2023-32252",
"CVE-2023-32257",
"CVE-2023-32258",
"CVE-2023-38426",
"CVE-2023-38428",
"CVE-2023-38429"
);
script_xref(name:"USN", value:"6344-1");
script_name(english:"Ubuntu 23.04 : Linux kernel (Azure) vulnerabilities (USN-6344-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 23.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the
USN-6344-1 advisory.
Zi Fan Tan discovered that the binder IPC implementation in the Linux kernel contained a use-after-free
vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-21255)
It was discovered that a race condition existed in the f2fs file system in the Linux kernel, leading to a
null pointer dereference vulnerability. An attacker could use this to construct a malicious f2fs image
that, when mounted and operated on, could cause a denial of service (system crash). (CVE-2023-2898)
It was discovered that the DVB Core driver in the Linux kernel did not properly handle locking events in
certain situations. A local attacker could use this to cause a denial of service (kernel deadlock).
(CVE-2023-31084)
Quentin Minster discovered that the KSMBD implementation in the Linux kernel did not properly handle
session setup requests. A remote attacker could possibly use this to cause a denial of service (memory
exhaustion). (CVE-2023-32247)
Quentin Minster discovered that a race condition existed in the KSMBD implementation in the Linux kernel
when handling sessions operations. A remote attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2023-32250, CVE-2023-32252, CVE-2023-32257)
It was discovered that a race condition existed in the KSMBD implementation in the Linux kernel when
handling session connections, leading to a use- after-free vulnerability. A remote attacker could use this
to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-32258)
It was discovered that the KSMBD implementation in the Linux kernel did not properly validate buffer sizes
in certain operations, leading to an out-of- bounds read vulnerability. A remote attacker could use this
to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2023-38426,
CVE-2023-38428)
It was discovered that the KSMBD implementation in the Linux kernel did not properly calculate the size of
certain buffers. A remote attacker could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-38429)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-6344-1");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-38429");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2023/04/24");
script_set_attribute(attribute:"patch_publication_date", value:"2023/09/06");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/06");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1011-azure");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
include('ksplice.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('23.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 23.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var kernel_mappings = {
'23.04': {
'6.2.0': {
'azure': '6.2.0-1011'
}
}
};
var host_kernel_release = get_kb_item('Host/uptrack-uname-r');
if (empty_or_null(host_kernel_release)) host_kernel_release = get_kb_item_or_exit('Host/uname-r');
var host_kernel_base_version = get_kb_item_or_exit('Host/Debian/kernel-base-version');
var host_kernel_type = get_kb_item_or_exit('Host/Debian/kernel-type');
if(empty_or_null(kernel_mappings[os_release][host_kernel_base_version][host_kernel_type])) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + host_kernel_release);
var extra = '';
var kernel_fixed_version = kernel_mappings[os_release][host_kernel_base_version][host_kernel_type] + "-" + host_kernel_type;
if (deb_ver_cmp(ver1:host_kernel_release, ver2:kernel_fixed_version) < 0)
{
extra += 'Running Kernel level of ' + host_kernel_release + ' does not meet the minimum fixed level of ' + kernel_fixed_version + ' for this advisory.\n\n';
}
else
{
audit(AUDIT_PATCH_INSTALLED, 'Kernel package for USN-6344-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2023-2898', 'CVE-2023-21255', 'CVE-2023-31084', 'CVE-2023-32247', 'CVE-2023-32250', 'CVE-2023-32252', 'CVE-2023-32257', 'CVE-2023-32258', 'CVE-2023-38426', 'CVE-2023-38428', 'CVE-2023-38429');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-6344-1');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21255
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-2898
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-31084
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32247
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32250
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32252
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32257
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-32258
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38426
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38428
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-38429
ubuntu.com/security/notices/USN-6344-1
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
82.9%