EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-2686)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(166877);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/01/12");

  script_cve_id(
    "CVE-2020-36557",
    "CVE-2022-2503",
    "CVE-2022-2586",
    "CVE-2022-2588",
    "CVE-2022-2639",
    "CVE-2022-2873",
    "CVE-2022-2964",
    "CVE-2022-3028",
    "CVE-2022-20368",
    "CVE-2022-20369",
    "CVE-2022-26373",
    "CVE-2022-36123",
    "CVE-2022-36879",
    "CVE-2022-36946"
  );

  script_name(english:"EulerOS 2.0 SP10 : kernel (EulerOS-SA-2022-2686)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the kernel packages installed, the EulerOS installation on the remote host is affected by
the following vulnerabilities :

  - A race condition in the Linux kernel before 5.6.2 between the VT_DISALLOCATE ioctl and closing/opening of
    ttys could lead to a use-after-free. (CVE-2020-36557)

  - Product: AndroidVersions: Android kernelAndroid ID: A-224546354References: Upstream kernel
    (CVE-2022-20368)

  - In v4l2_m2m_querybuf of v4l2-mem2mem.c, there is a possible out of bounds write due to improper input
    validation. This could lead to local escalation of privilege with System execution privileges needed. User
    interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-223375145References: Upstream kernel (CVE-2022-20369)

  - Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to
    restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently
    allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass
    verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and
    unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for
    peripherals that do not verify firmware updates. We recommend upgrading past commit
    4caae58406f8ceb741603eee460d79bacca9b1b5 (CVE-2022-2503)

  - Non-transparent sharing of return predictor targets between contexts in some Intel(R) Processors may allow
    an authorized user to potentially enable information disclosure via local access. (CVE-2022-26373)

  - An integer coercion error was found in the openvswitch kernel module. Given a sufficiently large number of
    actions, while copying and reserving memory for a new action of a new flow, the reserve_sfa_size()
    function does not return -EMSGSIZE as expected, potentially leading to an out-of-bounds write access. This
    flaw allows a local user to crash or potentially escalate their privileges on the system. (CVE-2022-2639)

  - An out-of-bounds memory access flaw was found in the Linux kernel Intel's iSMT SMBus host controller
    driver in the way a user triggers the I2C_SMBUS_BLOCK_DATA (with the ioctl I2C_SMBUS) with malicious input
    data. This flaw allows a local user to crash the system. (CVE-2022-2873)

  - A flaw was found in the Linux kernel's driver for the ASIX AX88179_178A-based USB 2.0/3.0 Gigabit Ethernet
    Devices. The vulnerability contains multiple out-of-bounds reads and possible out-of-bounds writes.
    (CVE-2022-2964)

  - A race condition was found in the Linux kernel's IP framework for transforming packets (XFRM subsystem)
    when multiple calls to xfrm_probe_algs occurred simultaneously. This flaw could allow a local attacker to
    potentially trigger an out-of-bounds write or leak kernel heap memory by performing an out-of-bounds read
    and copying it into a socket. (CVE-2022-3028)

  - The Linux kernel before 5.18.13 lacks a certain clear operation for the block starting symbol (.bss). This
    allows Xen PV guest OS users to cause a denial of service or gain privileges. (CVE-2022-36123)

  - An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in
    net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice. (CVE-2022-36879)

  - nfqnl_mangle in net/netfilter/nfnetlink_queue.c in the Linux kernel through 5.18.14 allows remote
    attackers to cause a denial of service (panic) because, in the case of an nf_queue verdict with a one-byte
    nfta_payload attribute, an skb_pull can encounter a negative skb->len. (CVE-2022-36946)

  - A use-after-free flaw was found in the Linux kernel's Atheros wireless adapter driver in the way a user
    forces the ath9k_htc_wait_for_target function to fail with some input messages. This flaw allows a local
    user to crash or potentially escalate their privileges on the system. (CVE-2022-1679) (CVE-2022-2586)

  - kernel: a use-after-free in cls_route filter implementation may lead to privilege escalation
    (CVE-2022-2588)

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-2022-2686
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?23dbf0d1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel packages.");
  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:H/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:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-36123");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/07/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/11/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/11/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:bpftool");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:kernel-abi-stablelists");
  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:python3-perf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2023 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/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(10)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10", "EulerOS UVP " + uvp);

if (!get_kb_item("Host/EulerOS/rpm-list")) 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$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

var flag = 0;

var pkgs = [
  "bpftool-4.18.0-147.5.2.13.h996.eulerosv2r10",
  "kernel-4.18.0-147.5.2.13.h996.eulerosv2r10",
  "kernel-abi-stablelists-4.18.0-147.5.2.13.h996.eulerosv2r10",
  "kernel-tools-4.18.0-147.5.2.13.h996.eulerosv2r10",
  "kernel-tools-libs-4.18.0-147.5.2.13.h996.eulerosv2r10",
  "python3-perf-4.18.0-147.5.2.13.h996.eulerosv2r10"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"10", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "kernel");
}