The remote Ubuntu 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5815-1 advisory.
In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free.
This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
A-239630375References: Upstream kernel (CVE-2022-20421)
An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted IRC with nf_conntrack_irc configured. (CVE-2022-2663)
Found Linux Kernel flaw in the i740 driver. The Userspace program could pass any values to the driver through ioctl() interface. The driver doesn’t check the value of ‘pixclock’, so it may cause a divide by zero error. (CVE-2022-3061)
A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or member of the audio group) could use this flaw to crash the system, resulting in a denial of service condition (CVE-2022-3303)
A flaw was found in the Linux kernel’s networking code. A use-after-free was found in the way the sch_sfb enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed) into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of service. (CVE-2022-3586)
A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability. (CVE-2022-3646)
An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an integer overflow and bypassing the size check. After that, because it is used as the third argument to copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can actually happen. (CVE-2022-39842)
An issue was discovered in the Linux kernel through 5.19.8. drivers/firmware/efi/capsule-loader.c has a race condition with a resultant use-after-free. (CVE-2022-40307)
A use-after-free flaw was found in Linux kernel before 5.19.2. This issue occurs in cmd_hdl_filter in drivers/staging/rtl8712/rtl8712_cmd.c, allowing an attacker to launch a local denial of service attack and gain escalation of privileges. (CVE-2022-4095)
drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user- space client to corrupt the monitor’s internal memory. (CVE-2022-43750)
An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)
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-5815-1. 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(170187);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/09");
script_cve_id(
"CVE-2022-2663",
"CVE-2022-3061",
"CVE-2022-3303",
"CVE-2022-3586",
"CVE-2022-3646",
"CVE-2022-39188",
"CVE-2022-4095",
"CVE-2022-20421",
"CVE-2022-39842",
"CVE-2022-40307",
"CVE-2022-43750"
);
script_xref(name:"USN", value:"5815-1");
script_name(english:"Ubuntu 20.04 LTS : Linux kernel (BlueField) vulnerabilities (USN-5815-1)");
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 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-5815-1 advisory.
- In binder_inc_ref_for_node of binder.c, there is a possible way to corrupt memory due to a use after free.
This could lead to local escalation of privilege with no additional execution privileges needed. User
interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
A-239630375References: Upstream kernel (CVE-2022-20421)
- An issue was found in the Linux kernel in nf_conntrack_irc where the message handling can be confused and
incorrectly matches the message. A firewall may be able to be bypassed when users are using unencrypted
IRC with nf_conntrack_irc configured. (CVE-2022-2663)
- Found Linux Kernel flaw in the i740 driver. The Userspace program could pass any values to the driver
through ioctl() interface. The driver doesn't check the value of 'pixclock', so it may cause a divide by
zero error. (CVE-2022-3061)
- A race condition flaw was found in the Linux kernel sound subsystem due to improper locking. It could lead
to a NULL pointer dereference while handling the SNDCTL_DSP_SYNC ioctl. A privileged local user (root or
member of the audio group) could use this flaw to crash the system, resulting in a denial of service
condition (CVE-2022-3303)
- A flaw was found in the Linux kernel's networking code. A use-after-free was found in the way the sch_sfb
enqueue function used the socket buffer (SKB) cb field after the same SKB had been enqueued (and freed)
into a child qdisc. This flaw allows a local, unprivileged user to crash the system, causing a denial of
service. (CVE-2022-3586)
- A vulnerability, which was classified as problematic, has been found in Linux Kernel. This issue affects
the function nilfs_attach_log_writer of the file fs/nilfs2/segment.c of the component BPF. The
manipulation leads to memory leak. The attack may be initiated remotely. It is recommended to apply a
patch to fix this issue. The identifier VDB-211961 was assigned to this vulnerability. (CVE-2022-3646)
- An issue was discovered in the Linux kernel before 5.19. In pxa3xx_gcu_write in
drivers/video/fbdev/pxa3xx-gcu.c, the count parameter has a type conflict of size_t versus int, causing an
integer overflow and bypassing the size check. After that, because it is used as the third argument to
copy_from_user(), a heap overflow may occur. NOTE: the original discoverer disputes that the overflow can
actually happen. (CVE-2022-39842)
- An issue was discovered in the Linux kernel through 5.19.8. drivers/firmware/efi/capsule-loader.c has a
race condition with a resultant use-after-free. (CVE-2022-40307)
- A use-after-free flaw was found in Linux kernel before 5.19.2. This issue occurs in cmd_hdl_filter in
drivers/staging/rtl8712/rtl8712_cmd.c, allowing an attacker to launch a local denial of service attack and
gain escalation of privileges. (CVE-2022-4095)
- drivers/usb/mon/mon_bin.c in usbmon in the Linux kernel before 5.19.15 and 6.x before 6.0.1 allows a user-
space client to corrupt the monitor's internal memory. (CVE-2022-43750)
- An issue was discovered in include/asm-generic/tlb.h in the Linux kernel before 5.19. Because of a race
condition (unmap_mapping_range versus munmap), a device driver can free a page while it still has stale
TLB entries. This only occurs in situations with VM_PFNMAP VMAs. (CVE-2022-39188)
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-5815-1");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:H/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-2022-4095");
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:"2022/09/01");
script_set_attribute(attribute:"patch_publication_date", value:"2023/01/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/20");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1054-bluefield");
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 (! ('20.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04', '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 = {
'20.04': {
'5.4.0': {
'bluefield': '5.4.0-1054'
}
}
};
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-5815-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2022-2663', 'CVE-2022-3061', 'CVE-2022-3303', 'CVE-2022-3586', 'CVE-2022-3646', 'CVE-2022-4095', 'CVE-2022-20421', 'CVE-2022-39188', 'CVE-2022-39842', 'CVE-2022-40307', 'CVE-2022-43750');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-5815-1');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-20421
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-2663
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3061
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3303
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3586
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-3646
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39188
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-39842
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-40307
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4095
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-43750
ubuntu.com/security/notices/USN-5815-1