The remote Ubuntu 16.04 ESM / 18.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6604-2 advisory.
A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.
(CVE-2023-1079)
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. (CVE-2023-20588)
An issue was discovered in lib/kobject.c in the Linux kernel before 6.2.3. With root access, an attacker can trigger a race condition that results in a fill_kobj_path out-of-bounds write. (CVE-2023-45863)
An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.
(CVE-2023-6606)
A heap out-of-bounds write vulnerability in the Linux kernel’s Performance Events system component can be exploited to achieve local privilege escalation. A perf_event’s read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b. (CVE-2023-6931)
A use-after-free vulnerability in the Linux kernel’s ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1. (CVE-2023-6932)
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-6604-2. 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(189758);
script_version("1.1");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/02");
script_cve_id(
"CVE-2023-1079",
"CVE-2023-6606",
"CVE-2023-6931",
"CVE-2023-6932",
"CVE-2023-20588",
"CVE-2023-45863"
);
script_xref(name:"USN", value:"6604-2");
script_name(english:"Ubuntu 16.04 ESM / 18.04 ESM : Linux kernel (Azure) vulnerabilities (USN-6604-2)");
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 16.04 ESM / 18.04 ESM host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-6604-2 advisory.
- A flaw was found in the Linux kernel. A use-after-free may be triggered in asus_kbd_backlight_set when
plugging/disconnecting in a malicious USB device, which advertises itself as an Asus device. Similarly to
the previous known CVE-2023-25012, but in asus devices, the work_struct may be scheduled by the LED
controller while the device is disconnecting, triggering a use-after-free on the struct asus_kbd_leds *led
structure. A malicious USB device may exploit the issue to cause memory corruption with controlled data.
(CVE-2023-1079)
- A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss
of confidentiality. (CVE-2023-20588)
- An issue was discovered in lib/kobject.c in the Linux kernel before 6.2.3. With root access, an attacker
can trigger a race condition that results in a fill_kobj_path out-of-bounds write. (CVE-2023-45863)
- An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux
Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.
(CVE-2023-6606)
- A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be
exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap
out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit
382c27f4ed28f803b1f1473ac2d8db0afc795a1b. (CVE-2023-6931)
- A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve
local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on
a RCU read locked object which is freed by another thread. We recommend upgrading past commit
e2b706c691905fe78468c361aaabc719d0a496f1. (CVE-2023-6932)
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-6604-2");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
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:POC/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:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-1079");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-6606");
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:"2023/03/17");
script_set_attribute(attribute:"patch_publication_date", value:"2024/01/29");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/01/30");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:esm");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:esm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1173-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) 2024 Canonical, Inc. / NASL script (C) 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 (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 18.04', '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 = {
'16.04': {
'4.15.0': {
'azure': '4.15.0-1173'
}
},
'18.04': {
'4.15.0': {
'azure': '4.15.0-1173'
}
}
};
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 = 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-6604-2');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2023-1079', 'CVE-2023-6606', 'CVE-2023-6931', 'CVE-2023-6932', 'CVE-2023-20588', 'CVE-2023-45863');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-6604-2');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_HOLE,
extra : extra
);
exit(0);
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 16.04 | cpe:/o:canonical:ubuntu_linux:16.04:-:esm |
canonical | ubuntu_linux | 18.04 | cpe:/o:canonical:ubuntu_linux:18.04:-:esm |
canonical | ubuntu_linux | linux-image-4.15.0-1173-azure | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1173-azure |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1079
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20588
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-45863
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6606
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6931
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6932
ubuntu.com/security/notices/USN-6604-2