Vulnerabilities > CVE-2016-4440 - Permissions, Privileges, and Access Controls vulnerability in Linux Kernel

047910
CVSS 7.8 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
local
low complexity
linux
CWE-264
nessus

Summary

arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3 mishandles the APICv on/off state, which allows guest OS users to obtain direct APIC MSR access on the host OS, and consequently cause a denial of service (host OS crash) or possibly execute arbitrary code on the host OS, via x2APIC mode.

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-06F1572324.NASL
    descriptionThe 4.5.5 stable update contains a number of important fixes across the tree. ---- The 4.5.4 stable update contains a number of important fixes across the tree. ---- The 4.5.3 stable rebase contains enhanced hardware support, additional features, and a number of important fixes across the tree. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-07-14
    plugin id92055
    published2016-07-14
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92055
    titleFedora 23 : kernel (2016-06f1572324)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2016-06f1572324.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(92055);
      script_version("1.9");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2016-0758", "CVE-2016-3713", "CVE-2016-4440", "CVE-2016-4485", "CVE-2016-4486", "CVE-2016-4557", "CVE-2016-4558", "CVE-2016-4569", "CVE-2016-4581", "CVE-2016-4913");
      script_xref(name:"FEDORA", value:"2016-06f1572324");
    
      script_name(english:"Fedora 23 : kernel (2016-06f1572324)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The 4.5.5 stable update contains a number of important fixes across
    the tree.
    
    ----
    
    The 4.5.4 stable update contains a number of important fixes across
    the tree.
    
    ----
    
    The 4.5.3 stable rebase contains enhanced hardware support, additional
    features, and a number of important fixes across the tree.
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora update system website.
    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://bodhi.fedoraproject.org/updates/FEDORA-2016-06f1572324"
      );
      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:F/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:F/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
      script_set_attribute(attribute:"metasploit_name", value:'Linux BPF doubleput UAF Privilege Escalation');
      script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:kernel");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:23");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/23");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/06/02");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/07/14");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    include("ksplice.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! preg(pattern:"^23([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 23", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) 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, "Fedora", cpu);
    
    if (get_one_kb_item("Host/ksplice/kernel-cves"))
    {
      rm_kb_item(name:"Host/uptrack-uname-r");
      cve_list = make_list("CVE-2016-0758", "CVE-2016-3713", "CVE-2016-4440", "CVE-2016-4485", "CVE-2016-4486", "CVE-2016-4557", "CVE-2016-4558", "CVE-2016-4569", "CVE-2016-4581", "CVE-2016-4913");
      if (ksplice_cves_check(cve_list))
      {
        audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for FEDORA-2016-06f1572324");
      }
      else
      {
        __rpm_report = ksplice_reporting_text();
      }
    }
    
    flag = 0;
    if (rpm_check(release:"FC23", reference:"kernel-4.5.5-201.fc23")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
    }
    
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2016-D9147693A3.NASL
    descriptionThe 4.5.6 stable update contains a number of important fixes across the tree. Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.
    last seen2020-06-05
    modified2016-07-14
    plugin id92178
    published2016-07-14
    reporterThis script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/92178
    titleFedora 24 : kernel (2016-d9147693a3)
    code
    #%NASL_MIN_LEVEL 80502
    #
    # (C) Tenable Network Security, Inc.
    #
    # The descriptive text and package checks in this plugin were  
    # extracted from Fedora Security Advisory FEDORA-2016-d9147693a3.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(92178);
      script_version("1.5");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04");
    
      script_cve_id("CVE-2016-4440", "CVE-2016-4951");
      script_xref(name:"FEDORA", value:"2016-d9147693a3");
    
      script_name(english:"Fedora 24 : kernel (2016-d9147693a3)");
      script_summary(english:"Checks rpm output for the updated package.");
    
      script_set_attribute(
        attribute:"synopsis", 
        value:"The remote Fedora host is missing a security update."
      );
      script_set_attribute(
        attribute:"description", 
        value:
    "The 4.5.6 stable update contains a number of important fixes across
    the tree.
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the Fedora update system website.
    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://bodhi.fedoraproject.org/updates/FEDORA-2016-d9147693a3"
      );
      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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:kernel");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:24");
    
      script_set_attribute(attribute:"vuln_publication_date", value:"2016/05/23");
      script_set_attribute(attribute:"patch_publication_date", value:"2016/06/18");
      script_set_attribute(attribute:"plugin_publication_date", value:"2016/07/14");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_copyright(english:"This script is Copyright (C) 2016-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
      script_family(english:"Fedora Local Security Checks");
    
      script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list");
    
      exit(0);
    }
    
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    include("ksplice.inc");
    
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    release = get_kb_item("Host/RedHat/release");
    if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora");
    os_ver = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release);
    if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora");
    os_ver = os_ver[1];
    if (! preg(pattern:"^24([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 24", "Fedora " + os_ver);
    
    if (!get_kb_item("Host/RedHat/rpm-list")) 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, "Fedora", cpu);
    
    if (get_one_kb_item("Host/ksplice/kernel-cves"))
    {
      rm_kb_item(name:"Host/uptrack-uname-r");
      cve_list = make_list("CVE-2016-4440", "CVE-2016-4951");
      if (ksplice_cves_check(cve_list))
      {
        audit(AUDIT_PATCH_INSTALLED, "KSplice hotfix for FEDORA-2016-d9147693a3");
      }
      else
      {
        __rpm_report = ksplice_reporting_text();
      }
    }
    
    flag = 0;
    if (rpm_check(release:"FC24", reference:"kernel-4.5.6-300.fc24")) flag++;
    
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
    }
    
  • NASL familyHuawei Local Security Checks
    NASL idEULEROS_SA-2019-1484.NASL
    descriptionAccording to the versions of the kernel packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities : - In the Linux kernel, Hisilicon Network Subsystem (HNS) does not consider the ETH_SS_PRIV_FLAGS case when retrieving sset_count data. This allows local users to cause a denial of service (buffer overflow and memory corruption) or possibly have unspecified other impacts.(CVE-2017-18222i1/4%0 - A flaw was found in the way the Linux kernel
    last seen2020-03-19
    modified2019-05-13
    plugin id124808
    published2019-05-13
    reporterThis script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/124808
    titleEulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1484)
    code
    #
    # (C) Tenable Network Security, Inc.
    #
    
    include("compat.inc");
    
    if (description)
    {
      script_id(124808);
      script_version("1.5");
      script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/19");
    
      script_cve_id(
        "CVE-2013-7266",
        "CVE-2014-2672",
        "CVE-2014-2678",
        "CVE-2014-8086",
        "CVE-2015-0569",
        "CVE-2015-2150",
        "CVE-2015-3331",
        "CVE-2015-5307",
        "CVE-2015-5366",
        "CVE-2016-4440",
        "CVE-2016-7117",
        "CVE-2016-7914",
        "CVE-2017-1000410",
        "CVE-2017-17052",
        "CVE-2017-18222",
        "CVE-2017-6214",
        "CVE-2018-10087",
        "CVE-2018-10878",
        "CVE-2018-13100",
        "CVE-2018-18690"
      );
      script_bugtraq_id(
        64743,
        66492,
        66543,
        70376,
        73014,
        74235,
        75510
      );
    
      script_name(english:"EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1484)");
      script_summary(english:"Checks the rpm output for the updated packages.");
    
      script_set_attribute(attribute:"synopsis", value:
    "The remote EulerOS Virtualization for ARM 64 host is missing multiple security
    updates.");
      script_set_attribute(attribute:"description", value:
    "According to the versions of the kernel packages installed, the
    EulerOS Virtualization for ARM 64 installation on the remote host is
    affected by the following vulnerabilities :
    
      - In the Linux kernel, Hisilicon Network Subsystem (HNS)
        does not consider the ETH_SS_PRIV_FLAGS case when
        retrieving sset_count data. This allows local users to
        cause a denial of service (buffer overflow and memory
        corruption) or possibly have unspecified other
        impacts.(CVE-2017-18222i1/4%0
    
      - A flaw was found in the way the Linux kernel's
        networking implementation handled UDP packets with
        incorrect checksum values. A remote attacker could
        potentially use this flaw to trigger an infinite loop
        in the kernel, resulting in a denial of service on the
        system, or cause a denial of service in applications
        using the edge triggered epoll
        functionality.(CVE-2015-5366i1/4%0
    
      - A use-after-free vulnerability was found in the
        kernel's socket recvmmsg subsystem. This may allow
        remote attackers to corrupt memory and may allow
        execution of arbitrary code. This corruption takes
        place during the error handling routines within
        __sys_recvmmsg() function.(CVE-2016-7117i1/4%0
    
      - arch/x86/kvm/vmx.c in the Linux kernel through 4.6.3
        mishandles the APICv on/off state, which allows guest
        OS users to obtain direct APIC MSR access on the host
        OS, and consequently cause a denial of service (host OS
        crash) or possibly execute arbitrary code on the host
        OS, via x2APIC mode.(CVE-2016-4440i1/4%0
    
      - In the Linux kernel before 4.17, a local attacker able
        to set attributes on an xfs filesystem could make this
        filesystem non-operational until the next mount by
        triggering an unchecked error condition during an xfs
        attribute change, because xfs_attr_shortform_addname in
        fs/xfs/libxfs/xfs_attr.c mishandles ATTR_REPLACE
        operations with conversion of an attr from short to
        long form.(CVE-2018-18690i1/4%0
    
      - A flaw was found in the Linux kernel's ext4 filesystem.
        A local user can cause an out-of-bounds write and a
        denial of service or unspecified other impact is
        possible by mounting and operating a crafted ext4
        filesystem image.(CVE-2018-10878i1/4%0
    
      - Xen 3.3.x through 4.5.x and the Linux kernel through
        3.19.1 do not properly restrict access to PCI command
        registers, which might allow local guest OS users to
        cause a denial of service (non-maskable interrupt and
        host crash) by disabling the (1) memory or (2) I/O
        decoding for a PCI Express device and then accessing
        the device, which triggers an Unsupported Request (UR)
        response.(CVE-2015-2150i1/4%0
    
      - The assoc_array_insert_into_terminal_node() function in
        'lib/assoc_array.c' in the Linux kernel before 4.5.3
        does not check whether a slot is a leaf, which allows
        local users to obtain sensitive information from kernel
        memory or cause a denial of service (invalid pointer
        dereference and out-of-bounds read) via an application
        that uses associative-array data
        structures.(CVE-2016-7914i1/4%0
    
      - It was found that the x86 ISA (Instruction Set
        Architecture) is prone to a denial of service attack
        inside a virtualized environment in the form of an
        infinite loop in the microcode due to the way
        (sequential) delivering of benign exceptions such as
        #AC (alignment check exception) is handled. A
        privileged user inside a guest could use this flaw to
        create denial of service conditions on the host
        kernel.(CVE-2015-5307i1/4%0
    
      - An issue was discovered in fs/f2fs/super.c in the Linux
        kernel, which does not properly validate secs_per_zone
        in a corrupted f2fs image. This may lead to a
        divide-by-zero error and a system
        crash.(CVE-2018-13100i1/4%0
    
      - The mISDN_sock_recvmsg function in
        drivers/isdn/mISDN/socket.c in the Linux kernel before
        3.12.4 does not ensure that a certain length value is
        consistent with the size of an associated data
        structure, which allows local users to obtain sensitive
        information from kernel memory via a (1) recvfrom, (2)
        recvmmsg, or (3) recvmsg system call.(CVE-2013-7266i1/4%0
    
      - A NULL pointer dereference flaw was found in the
        rds_iw_laddr_check() function in the Linux kernel's
        implementation of Reliable Datagram Sockets (RDS). A
        local, unprivileged user could use this flaw to crash
        the system.(CVE-2014-2678i1/4%0
    
      - A flaw was found in the Linux kernel's handling of
        packets with the URG flag. Applications using the
        splice() and tcp_splice_read() functionality could
        allow a remote attacker to force the kernel to enter a
        condition in which it could loop
        indefinitely.(CVE-2017-6214i1/4%0
    
      - The kernel_wait4 function in kernel/exit.c in the Linux
        kernel before 4.13, when an unspecified architecture
        and compiler is used, might allow local users to cause
        a denial of service by triggering an attempted use of
        the -INT_MIN value.(CVE-2018-10087i1/4%0
    
      - Heap-based buffer overflow in the private wireless
        extensions IOCTL implementation in wlan_hdd_wext.c in
        the WLAN (aka Wi-Fi) driver for the Linux kernel 3.x
        and 4.x, as used in Qualcomm Innovation Center (QuIC)
        Android contributions for MSM devices and other
        products, allows attackers to gain privileges via a
        crafted application that establishes a packet
        filter.(CVE-2015-0569i1/4%0
    
      - A race condition flaw was found in the Linux kernel's
        ext4 file system implementation that allowed a local,
        unprivileged user to crash the system by simultaneously
        writing to a file and toggling the O_DIRECT flag using
        fcntl(F_SETFL) on that file.(CVE-2014-8086i1/4%0
    
      - The mm_init function in kernel/fork.c in the Linux
        kernel before 4.12.10 does not clear the -i1/4zexe_file
        member of a new process's mm_struct, allowing a local
        attacker to achieve a use-after-free condition and to
        induce a kernel memory corruption on the system,
        leading to a crash or possibly have unspecified other
        impact by running a specially crafted program. Due to
        the nature of the flaw, privilege escalation cannot be
        fully ruled out, although we feel it is
        unlikely.(CVE-2017-17052i1/4%0
    
      - A buffer overflow flaw was found in the way the Linux
        kernel's Intel AES-NI instructions optimized version of
        the RFC4106 GCM mode decryption functionality handled
        fragmented packets. A remote attacker could use this
        flaw to crash, or potentially escalate their privileges
        on, a system over a connection with an active AES-GCM
        mode IPSec security association.(CVE-2015-3331i1/4%0
    
      - A flaw was found in the processing of incoming L2CAP
        bluetooth commands. Uninitialized stack variables can
        be sent to an attacker leaking data in kernel address
        space.(CVE-2017-1000410i1/4%0
    
      - It was found that a remote attacker could use a race
        condition flaw in the ath_tx_aggr_sleep() function to
        crash the system by creating large network traffic on
        the system's Atheros 9k wireless network
        adapter.(CVE-2014-2672i1/4%0
    
    Note that Tenable Network Security has extracted the preceding
    description block directly from the EulerOS security advisory. Tenable
    has attempted to automatically clean and format it as much as possible
    without introducing additional issues.");
      # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-1484
      script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?afeb6657");
      script_set_attribute(attribute:"solution", value:
    "Update the affected kernel packages.");
      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:POC/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:P/RL:O/RC:C");
      script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
      script_set_attribute(attribute:"exploit_available", value:"true");
    
      script_set_attribute(attribute:"patch_publication_date", value:"2019/05/09");
      script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/13");
    
      script_set_attribute(attribute:"plugin_type", value:"local");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-headers");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-tools-libs-devel");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:perf");
      script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-perf");
      script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:3.0.1.0");
      script_set_attribute(attribute:"generated_plugin", value:"current");
      script_end_attributes();
    
      script_category(ACT_GATHER_INFO);
      script_family(english:"Huawei Local Security Checks");
    
      script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
    
      script_dependencies("ssh_get_info.nasl");
      script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");
    
      exit(0);
    }
    
    include("audit.inc");
    include("global_settings.inc");
    include("rpm.inc");
    
    if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
    
    release = get_kb_item("Host/EulerOS/release");
    if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
    uvp = get_kb_item("Host/EulerOS/uvp_version");
    if (uvp != "3.0.1.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 3.0.1.0");
    if (!get_kb_item("Host/EulerOS/rpm-list")) 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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
    if ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);
    
    flag = 0;
    
    pkgs = ["kernel-4.19.28-1.2.117",
            "kernel-devel-4.19.28-1.2.117",
            "kernel-headers-4.19.28-1.2.117",
            "kernel-tools-4.19.28-1.2.117",
            "kernel-tools-libs-4.19.28-1.2.117",
            "kernel-tools-libs-devel-4.19.28-1.2.117",
            "perf-4.19.28-1.2.117",
            "python-perf-4.19.28-1.2.117"];
    
    foreach (pkg in pkgs)
      if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;
    
    if (flag)
    {
      security_report_v4(
        port       : 0,
        severity   : SECURITY_HOLE,
        extra      : rpm_report_get()
      );
      exit(0);
    }
    else
    {
      tested = pkg_tests_get();
      if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
      else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
    }