Vulnerabilities > CVE-2019-19241 - Unspecified vulnerability in Linux Kernel

047910
CVSS 4.6 - MEDIUM
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
local
low complexity
linux
nessus
exploit available
NVD
Published: 2019-12-17
Updated: 2020-08-24

Summary

In the Linux kernel before 5.4.2, the io_uring feature leads to requests that inadvertently have UID 0 and full capabilities, aka CID-181e448d8709. This is related to fs/io-wq.c, fs/io_uring.c, and net/socket.c. For example, an attacker can bypass intended restrictions on adding an IPv4 address to the loopback interface. This occurs because IORING_OP_SENDMSG operations, although requested in the context of an unprivileged user, are sometimes performed by a kernel worker thread without considering that context.

Vulnerable Configurations

Part Description Count
OS
Linux
3216

Exploit-Db

idEDB-ID:47779
last seen2019-12-16
modified2019-12-16
published2019-12-16
reporterExploit-DB
sourcehttps://www.exploit-db.com/download/47779
titleLinux 5.3 - Privilege Escalation via io_uring Offload of sendmsg() onto Kernel Thread with Kernel Creds

Nessus

NASL familyUbuntu Local Security Checks
NASL idUBUNTU_USN-4284-1.NASL
descriptionIt was discovered that the Linux kernel did not properly clear data structures on context switches for certain Intel graphics processors. A local attacker could use this to expose sensitive information. (CVE-2019-14615) It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-15099) It was discovered that the HSA Linux kernel driver for AMD GPU devices did not properly check for errors in certain situations, leading to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service. (CVE-2019-16229) It was discovered that the Marvell 8xxx Libertas WLAN device driver in the Linux kernel did not properly check for errors in certain situations, leading to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service. (CVE-2019-16232) It was discovered that a race condition existed in the Virtual Video Test Driver in the Linux kernel. An attacker with write access to /dev/video0 on a system with the vivid module loaded could possibly use this to gain administrative privileges. (CVE-2019-18683) It was discovered that the Renesas Digital Radio Interface (DRIF) driver in the Linux kernel did not properly initialize data. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-18786) It was discovered that the Sound Open Firmware (SOF) driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-18811) It was discovered that the crypto subsystem in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19050, CVE-2019-19062) It was discovered that multiple memory leaks existed in the Marvell WiFi-Ex Driver for the Linux kernel. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19057) It was discovered that the Realtek rtlwifi USB device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19063) It was discovered that the RSI 91x WLAN device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19071) It was discovered that the Broadcom Netxtreme HCA device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19077) It was discovered that the Atheros 802.11ac wireless USB device driver in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could possibly use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19078) It was discovered that the AMD GPU device drivers in the Linux kernel did not properly deallocate memory in certain error conditions. A local attacker could use this to possibly cause a denial of service (kernel memory exhaustion). (CVE-2019-19082) It was discovered that the IO uring implementation in the Linux kernel did not properly perform credentials checks in certain situations. A local attacker could possibly use this to gain administrative privileges. (CVE-2019-19241) Or Cohen discovered that the virtual console subsystem in the Linux kernel did not properly restrict writes to unimplemented vcsu (unicode) devices. A local attacker could possibly use this to cause a denial of service (system crash) or have other unspecified impacts. (CVE-2019-19252) It was discovered that the KVM hypervisor implementation in the Linux kernel did not properly handle ioctl requests to get emulated CPUID features. An attacker with access to /dev/kvm could use this to cause a denial of service (system crash). (CVE-2019-19332) It was discovered that a race condition existed in the Linux kernel on x86 platforms when keeping track of which process was assigned control of the FPU. A local attacker could use this to cause a denial of service (memory corruption) or possibly gain administrative privileges. (CVE-2019-19602) It was discovered that the ext4 file system implementation in the Linux kernel did not properly handle certain conditions. An attacker could use this to specially craft an ext4 file system that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2019-19767) It was discovered that the Kvaser CAN/USB driver in the Linux kernel did not properly initialize memory in certain situations. A local attacker could possibly use this to expose sensitive information (kernel memory). (CVE-2019-19947) Gao Chuan discovered that the SAS Class driver in the Linux kernel contained a race condition that could lead to a NULL pointer dereference. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2019-19965) It was discovered that the B2C2 FlexCop USB device driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2019-15291). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
last seen2020-03-18
modified2020-02-19
plugin id133797
published2020-02-19
reporterUbuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/133797
titleUbuntu 18.04 LTS / 19.10 : linux, linux-aws, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-hwe, (USN-4284-1)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4284-1. The text 
# itself is copyright (C) Canonical, Inc. See 
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered 
# trademark of Canonical, Inc.
#

include("compat.inc");

if (description)
{
  script_id(133797);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/02/24");

  script_cve_id("CVE-2019-14615", "CVE-2019-15099", "CVE-2019-15291", "CVE-2019-16229", "CVE-2019-16232", "CVE-2019-18683", "CVE-2019-18786", "CVE-2019-18811", "CVE-2019-19050", "CVE-2019-19057", "CVE-2019-19062", "CVE-2019-19063", "CVE-2019-19071", "CVE-2019-19077", "CVE-2019-19078", "CVE-2019-19082", "CVE-2019-19241", "CVE-2019-19252", "CVE-2019-19332", "CVE-2019-19602", "CVE-2019-19767", "CVE-2019-19947", "CVE-2019-19965");
  script_xref(name:"USN", value:"4284-1");

  script_name(english:"Ubuntu 18.04 LTS / 19.10 : linux, linux-aws, linux-azure-5.3, linux-gcp, linux-gcp-5.3, linux-hwe, (USN-4284-1)");
  script_summary(english:"Checks dpkg output for updated packages.");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote Ubuntu host is missing one or more security-related
patches."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"It was discovered that the Linux kernel did not properly clear data
structures on context switches for certain Intel graphics processors.
A local attacker could use this to expose sensitive information.
(CVE-2019-14615)

It was discovered that the Atheros 802.11ac wireless USB device driver
in the Linux kernel did not properly validate device metadata. A
physically proximate attacker could use this to cause a denial of
service (system crash). (CVE-2019-15099)

It was discovered that the HSA Linux kernel driver for AMD GPU devices
did not properly check for errors in certain situations, leading to a
NULL pointer dereference. A local attacker could possibly use this to
cause a denial of service. (CVE-2019-16229)

It was discovered that the Marvell 8xxx Libertas WLAN device driver in
the Linux kernel did not properly check for errors in certain
situations, leading to a NULL pointer dereference. A local attacker
could possibly use this to cause a denial of service. (CVE-2019-16232)

It was discovered that a race condition existed in the Virtual Video
Test Driver in the Linux kernel. An attacker with write access to
/dev/video0 on a system with the vivid module loaded could possibly
use this to gain administrative privileges. (CVE-2019-18683)

It was discovered that the Renesas Digital Radio Interface (DRIF)
driver in the Linux kernel did not properly initialize data. A local
attacker could possibly use this to expose sensitive information
(kernel memory). (CVE-2019-18786)

It was discovered that the Sound Open Firmware (SOF) driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could use this to cause a denial of
service (kernel memory exhaustion). (CVE-2019-18811)

It was discovered that the crypto subsystem in the Linux kernel did
not properly deallocate memory in certain error conditions. A local
attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19050, CVE-2019-19062)

It was discovered that multiple memory leaks existed in the Marvell
WiFi-Ex Driver for the Linux kernel. A local attacker could possibly
use this to cause a denial of service (kernel memory exhaustion).
(CVE-2019-19057)

It was discovered that the Realtek rtlwifi USB device driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial
of service (kernel memory exhaustion). (CVE-2019-19063)

It was discovered that the RSI 91x WLAN device driver in the Linux
kernel did not properly deallocate memory in certain error conditions.
A local attacker could use this to cause a denial of service (kernel
memory exhaustion). (CVE-2019-19071)

It was discovered that the Broadcom Netxtreme HCA device driver in the
Linux kernel did not properly deallocate memory in certain error
conditions. A local attacker could possibly use this to cause a denial
of service (kernel memory exhaustion). (CVE-2019-19077)

It was discovered that the Atheros 802.11ac wireless USB device driver
in the Linux kernel did not properly deallocate memory in certain
error conditions. A local attacker could possibly use this to cause a
denial of service (kernel memory exhaustion). (CVE-2019-19078)

It was discovered that the AMD GPU device drivers in the Linux kernel
did not properly deallocate memory in certain error conditions. A
local attacker could use this to possibly cause a denial of service
(kernel memory exhaustion). (CVE-2019-19082)

It was discovered that the IO uring implementation in the Linux kernel
did not properly perform credentials checks in certain situations. A
local attacker could possibly use this to gain administrative
privileges. (CVE-2019-19241)

Or Cohen discovered that the virtual console subsystem in the Linux
kernel did not properly restrict writes to unimplemented vcsu
(unicode) devices. A local attacker could possibly use this to cause a
denial of service (system crash) or have other unspecified impacts.
(CVE-2019-19252)

It was discovered that the KVM hypervisor implementation in the Linux
kernel did not properly handle ioctl requests to get emulated CPUID
features. An attacker with access to /dev/kvm could use this to cause
a denial of service (system crash). (CVE-2019-19332)

It was discovered that a race condition existed in the Linux kernel on
x86 platforms when keeping track of which process was assigned control
of the FPU. A local attacker could use this to cause a denial of
service (memory corruption) or possibly gain administrative
privileges. (CVE-2019-19602)

It was discovered that the ext4 file system implementation in the
Linux kernel did not properly handle certain conditions. An attacker
could use this to specially craft an ext4 file system that, when
mounted, could cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2019-19767)

It was discovered that the Kvaser CAN/USB driver in the Linux kernel
did not properly initialize memory in certain situations. A local
attacker could possibly use this to expose sensitive information
(kernel memory). (CVE-2019-19947)

Gao Chuan discovered that the SAS Class driver in the Linux kernel
contained a race condition that could lead to a NULL pointer
dereference. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2019-19965)

It was discovered that the B2C2 FlexCop USB device driver in the Linux
kernel did not properly validate device metadata. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2019-15291).

Note that Tenable Network Security has extracted the preceding
description block directly from the Ubuntu security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://usn.ubuntu.com/4284-1/"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/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:L/AC:L/PR:L/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-2019-19602");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.3-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-azure-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp-edge");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gke");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi2-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-snapdragon-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-virtual-hwe-18.04");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:19.10");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/08/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/02/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/02/19");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"Ubuntu Security Notice (C) 2020 Canonical, Inc. / NASL script (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Ubuntu Local Security Checks");

  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("audit.inc");
include("ubuntu.inc");
include("ksplice.inc");

if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Ubuntu/release");
if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu");
release = chomp(release);
if (! preg(pattern:"^(18\.04|19\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 18.04 / 19.10", "Ubuntu " + release);
if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu);

if (get_one_kb_item("Host/ksplice/kernel-cves"))
{
  rm_kb_item(name:"Host/uptrack-uname-r");
  cve_list = make_list("CVE-2019-14615", "CVE-2019-15099", "CVE-2019-15291", "CVE-2019-16229", "CVE-2019-16232", "CVE-2019-18683", "CVE-2019-18786", "CVE-2019-18811", "CVE-2019-19050", "CVE-2019-19057", "CVE-2019-19062", "CVE-2019-19063", "CVE-2019-19071", "CVE-2019-19077", "CVE-2019-19078", "CVE-2019-19082", "CVE-2019-19241", "CVE-2019-19252", "CVE-2019-19332", "CVE-2019-19602", "CVE-2019-19767", "CVE-2019-19947", "CVE-2019-19965");
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for USN-4284-1");
  }
  else
  {
    _ubuntu_report = ksplice_reporting_text();
  }
}

flag = 0;

if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-1012-gcp", pkgver:"5.3.0-1012.13~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-1013-azure", pkgver:"5.3.0-1013.14~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-1018-raspi2", pkgver:"5.3.0-1018.20~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-40-generic", pkgver:"5.3.0-40.32~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-40-generic-lpae", pkgver:"5.3.0-40.32~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-5.3.0-40-lowlatency", pkgver:"5.3.0-40.32~18.04.1")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-azure-edge", pkgver:"5.3.0.1013.13")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-gcp-edge", pkgver:"5.3.0.1012.11")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-hwe-18.04", pkgver:"5.3.0.40.97")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-generic-lpae-hwe-18.04", pkgver:"5.3.0.40.97")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-lowlatency-hwe-18.04", pkgver:"5.3.0.40.97")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-raspi2-hwe-18.04", pkgver:"5.3.0.1018.7")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-snapdragon-hwe-18.04", pkgver:"5.3.0.40.97")) flag++;
if (ubuntu_check(osver:"18.04", pkgname:"linux-image-virtual-hwe-18.04", pkgver:"5.3.0.40.97")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1009-oracle", pkgver:"5.3.0-1009.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1010-kvm", pkgver:"5.3.0-1010.11")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1011-aws", pkgver:"5.3.0-1011.12")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1012-gcp", pkgver:"5.3.0-1012.13")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-1018-raspi2", pkgver:"5.3.0-1018.20")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-40-generic", pkgver:"5.3.0-40.32")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-40-generic-lpae", pkgver:"5.3.0-40.32")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-40-lowlatency", pkgver:"5.3.0-40.32")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-5.3.0-40-snapdragon", pkgver:"5.3.0-40.32")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-aws", pkgver:"5.3.0.1011.13")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-gcp", pkgver:"5.3.0.1012.13")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-generic", pkgver:"5.3.0.40.34")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-generic-lpae", pkgver:"5.3.0.40.34")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-gke", pkgver:"5.3.0.1012.13")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-kvm", pkgver:"5.3.0.1010.12")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-lowlatency", pkgver:"5.3.0.40.34")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-oracle", pkgver:"5.3.0.1009.10")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-raspi2", pkgver:"5.3.0.1018.15")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-snapdragon", pkgver:"5.3.0.40.34")) flag++;
if (ubuntu_check(osver:"19.10", pkgname:"linux-image-virtual", pkgver:"5.3.0.40.34")) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : ubuntu_report_get()
  );
  exit(0);
}
else
{
  tested = ubuntu_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "linux-image-5.3-aws / linux-image-5.3-azure / linux-image-5.3-gcp / etc");
}

Packetstorm

data sourcehttps://packetstormsecurity.com/files/download/155669/GS20191216153944.txt
idPACKETSTORM:155669
last seen2019-12-16
published2019-12-16
reporterJann Horn
sourcehttps://packetstormsecurity.com/files/155669/Linux-sendmsg-Privilege-Escalation.html
titleLinux sendmsg() Privilege Escalation

References