The remote Ubuntu 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5136-1 advisory.
In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in fs/f2fs/segment.c (because the second argument to get_seg_entry is not validated). (CVE-2019-19449)
An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as CVE-2021-28950. (CVE-2020-36322)
An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after- free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c. (CVE-2020-36385)
A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)
An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel.
A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system crash or a leak of internal kernel information. The highest threat from this vulnerability is to system availability. (CVE-2021-3743)
A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl (KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)
A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability. (CVE-2021-3759)
fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for those servers to be unreachable during trunking detection. (CVE-2021-38199)
An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a certain comparison uses values that are not memory sizes. (CVE-2021-42252)
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 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5136-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(154972);
script_version("1.7");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/09");
script_cve_id(
"CVE-2019-19449",
"CVE-2020-36322",
"CVE-2020-36385",
"CVE-2021-3655",
"CVE-2021-3743",
"CVE-2021-3753",
"CVE-2021-3759",
"CVE-2021-38199",
"CVE-2021-42252"
);
script_xref(name:"USN", value:"5136-1");
script_name(english:"Ubuntu 16.04 ESM / 18.04 LTS : Linux kernel vulnerabilities (USN-5136-1)");
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 16.04 ESM / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-5136-1 advisory.
- In the Linux kernel 5.0.21, mounting a crafted f2fs filesystem image can lead to slab-out-of-bounds read
access in f2fs_build_segment_manager in fs/f2fs/segment.c, related to init_min_max_mtime in
fs/f2fs/segment.c (because the second argument to get_seg_entry is not validated). (CVE-2019-19449)
- An issue was discovered in the FUSE filesystem implementation in the Linux kernel before 5.10.6, aka
CID-5d069dbe8aaf. fuse_do_getattr() calls make_bad_inode() in inappropriate situations, causing a system
crash. NOTE: the original fix for this vulnerability was incomplete, and its incompleteness is tracked as
CVE-2021-28950. (CVE-2020-36322)
- An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after-
free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is
called, aka CID-f5449e74802c. (CVE-2020-36385)
- A vulnerability was found in the Linux kernel in versions prior to v5.14-rc1. Missing size validations on
inbound SCTP packets may allow the kernel to read uninitialized memory. (CVE-2021-3655)
- An out-of-bounds (OOB) memory read flaw was found in the Qualcomm IPC router protocol in the Linux kernel.
A missing sanity check allows a local attacker to gain access to out-of-bounds memory, leading to a system
crash or a leak of internal kernel information. The highest threat from this vulnerability is to system
availability. (CVE-2021-3743)
- A race problem was seen in the vt_k_ioctl in drivers/tty/vt/vt_ioctl.c in the Linux kernel, which may
cause an out of bounds read in vt as the write access to vc_mode is not protected by lock-in vt_ioctl
(KDSETMDE). The highest threat from this vulnerability is to data confidentiality. (CVE-2021-3753)
- A memory overflow vulnerability was found in the Linux kernel's ipc functionality of the memcg subsystem,
in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local
user to starve the resources, causing a denial of service. The highest threat from this vulnerability is
to system availability. (CVE-2021-3759)
- fs/nfs/nfs4client.c in the Linux kernel before 5.13.4 has incorrect connection-setup ordering, which
allows operators of remote NFSv4 servers to cause a denial of service (hanging of mounts) by arranging for
those servers to be unreachable during trunking detection. (CVE-2021-38199)
- An issue was discovered in aspeed_lpc_ctrl_mmap in drivers/soc/aspeed/aspeed-lpc-ctrl.c in the Linux
kernel before 5.14.6. Local attackers able to access the Aspeed LPC control interface could overwrite
memory in the kernel and potentially execute privileges, aka CID-b49a0e69a7b1. This occurs because a
certain comparison uses values that are not memory sizes. (CVE-2021-42252)
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-5136-1");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
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-2020-36385");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-42252");
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:"2019/12/08");
script_set_attribute(attribute:"patch_publication_date", value:"2021/11/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2021/11/09");
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:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1030-dell300x");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1083-oracle");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1098-raspi2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1102-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1111-gcp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1115-aws");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1115-snapdragon");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1126-azure");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-162-generic");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-162-generic-lpae");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-162-lowlatency");
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) 2021-2024 Canonical, Inc. / NASL script (C) 2021-2024 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': {
'generic': '4.15.0-162',
'lowlatency': '4.15.0-162',
'oracle': '4.15.0-1083',
'gcp': '4.15.0-1111',
'aws': '4.15.0-1115',
'azure': '4.15.0-1126'
}
},
'18.04': {
'4.15.0': {
'generic': '4.15.0-162',
'generic-lpae': '4.15.0-162',
'lowlatency': '4.15.0-162',
'dell300x': '4.15.0-1030',
'oracle': '4.15.0-1083',
'raspi2': '4.15.0-1098',
'kvm': '4.15.0-1102',
'gcp': '4.15.0-1111',
'snapdragon': '4.15.0-1115',
'azure': '4.15.0-1126'
}
}
};
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-5136-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2019-19449', 'CVE-2020-36322', 'CVE-2020-36385', 'CVE-2021-3655', 'CVE-2021-3743', 'CVE-2021-3753', 'CVE-2021-3759', 'CVE-2021-38199', 'CVE-2021-42252');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-5136-1');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
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:-:lts |
canonical | ubuntu_linux | linux-image-4.15.0-1030-dell300x | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1030-dell300x |
canonical | ubuntu_linux | linux-image-4.15.0-1083-oracle | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1083-oracle |
canonical | ubuntu_linux | linux-image-4.15.0-1098-raspi2 | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1098-raspi2 |
canonical | ubuntu_linux | linux-image-4.15.0-1102-kvm | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1102-kvm |
canonical | ubuntu_linux | linux-image-4.15.0-1111-gcp | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1111-gcp |
canonical | ubuntu_linux | linux-image-4.15.0-1115-aws | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1115-aws |
canonical | ubuntu_linux | linux-image-4.15.0-1115-snapdragon | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1115-snapdragon |
canonical | ubuntu_linux | linux-image-4.15.0-1126-azure | p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1126-azure |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19449
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36322
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-36385
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3655
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3743
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3753
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3759
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-38199
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42252
ubuntu.com/security/notices/USN-5136-1