SUSE SLES12 Security Update : kernel (SUSE-SU-2023:1801-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:1801-1. The text itself
# is copyright (C) SUSE.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(174050);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/14");

  script_cve_id(
    "CVE-2017-5753",
    "CVE-2021-3923",
    "CVE-2022-20567",
    "CVE-2023-0590",
    "CVE-2023-1076",
    "CVE-2023-1095",
    "CVE-2023-1281",
    "CVE-2023-1390",
    "CVE-2023-1513",
    "CVE-2023-23454",
    "CVE-2023-23455",
    "CVE-2023-28328",
    "CVE-2023-28464",
    "CVE-2023-28772"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2023:1801-1");

  script_name(english:"SUSE SLES12 Security Update : kernel (SUSE-SU-2023:1801-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as
referenced in the SUSE-SU-2023:1801-1 advisory.

  - Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized
    disclosure of information to an attacker with local user access via a side-channel analysis.
    (CVE-2017-5753)

  - A flaw was found in the Linux kernel's implementation of RDMA over infiniband. An attacker with a
    privileged local account can leak kernel stack information when issuing commands to the
    /dev/infiniband/rdma_cm device node. While this access is unlikely to leak sensitive user information, it
    can be further used to defeat existing kernel protection mechanisms. (CVE-2021-3923)

  - In pppol2tp_create of l2tp_ppp.c, there is a possible use after free due to a race condition. 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-186777253References:
    Upstream kernel (CVE-2022-20567)

  - A use-after-free flaw was found in qdisc_graft in net/sched/sch_api.c in the Linux Kernel due to a race
    problem. This flaw leads to a denial of service issue. If patch ebda44da44f6 (net: sched: fix race
    condition in qdisc_graft()) not applied yet, then kernel could be affected. (CVE-2023-0590)

  - A flaw was found in the Linux Kernel. The tun/tap sockets have their socket UID hardcoded to 0 due to a
    type confusion in their initialization function. While it will be often correct, as tuntap devices require
    CAP_NET_ADMIN, it may not always be the case, e.g., a non-root user only having that capability. This
    would make tun/tap sockets being incorrectly treated in filtering/routing decisions, possibly bypassing
    network filters. (CVE-2023-1076)

  - In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the
    transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list
    -- the list head is all zeroes, this results in a NULL pointer dereference. (CVE-2023-1095)

  - Use After Free vulnerability in Linux kernel traffic control index filter (tcindex) allows Privilege
    Escalation. The imperfect hash area can be updated while packets are traversing, which will cause a use-
    after-free when 'tcf_exts_exec()' is called with the destroyed tcf_ext. A local attacker user can use this
    vulnerability to elevate its privileges to root. This issue affects Linux Kernel: from 4.14 before git
    commit ee059170b1f7e94e55fa6cadee544e176a6e59c2. (CVE-2023-1281)

  - A remote denial of service vulnerability was found in the Linux kernel's TIPC kernel module. The while
    loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue.
    Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system
    to instantly spike to 100%, causing a denial of service condition. (CVE-2023-1390)

  - A flaw was found in KVM. When calling the KVM_GET_DEBUGREGS ioctl, on 32-bit systems, there might be some
    uninitialized portions of the kvm_debugregs structure that could be copied to userspace, causing an
    information leak. (CVE-2023-1513)

  - cbq_classify in net/sched/sch_cbq.c in the Linux kernel through 6.1.4 allows attackers to cause a denial
    of service (slab-out-of-bounds read) because of type confusion (non-negative numbers can sometimes
    indicate a TC_ACT_SHOT condition rather than valid classification results). (CVE-2023-23454)

  - atm_tc_enqueue in net/sched/sch_atm.c in the Linux kernel through 6.1.4 allows attackers to cause a denial
    of service because of type confusion (non-negative numbers can sometimes indicate a TC_ACT_SHOT condition
    rather than valid classification results). (CVE-2023-23455)

  - A NULL pointer dereference flaw was found in the az6027 driver in drivers/media/usb/dev-usb/az6027.c in
    the Linux Kernel. The message from user space is not checked properly before transferring into the device.
    This flaw allows a local user to crash the system or potentially cause a denial of service.
    (CVE-2023-28328)

  - hci_conn_cleanup in net/bluetooth/hci_conn.c in the Linux kernel through 6.2.9 has a use-after-free
    (observed in hci_conn_hash_flush) because of calls to hci_dev_put and hci_conn_put. There is a double free
    that may lead to privilege escalation. (CVE-2023-28464)

  - An issue was discovered in the Linux kernel before 5.13.3. lib/seq_buf.c has a seq_buf_putmem_hex buffer
    overflow. (CVE-2023-28772)

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://bugzilla.suse.com/1065729");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1076830");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1109158");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1181001");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193231");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1199837");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1203693");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1206010");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207001");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207036");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207125");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207795");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1207890");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1208048");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1208599");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1208777");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1208850");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209052");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209118");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209126");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209256");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209289");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209291");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209292");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209532");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209547");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209549");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209556");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209572");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209634");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209684");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209778");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1209798");
  script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2023-April/028741.html");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2017-5753");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-3923");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-20567");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-0590");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1076");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1095");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1281");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1390");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-1513");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-23454");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-23455");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-28328");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-28464");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2023-28772");
  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:N/A:N");
  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-2017-5753");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2023-28464");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/04/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/04/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-azure-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-azure-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-devel-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-source-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:kernel-syms-azure");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:12");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 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/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES12|SLES_SAP12)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES12 / SLES_SAP12', 'SUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/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$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'SUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLES12" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES12 SP5", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP12" && (! preg(pattern:"^(5)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP12 SP5", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'kernel-azure-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-azure-base-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-azure-devel-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-devel-azure-4.12.14-16.130.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-source-azure-4.12.14-16.130.1', 'sp':'5', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-syms-azure-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES_SAP12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-12.5']},
    {'reference':'kernel-azure-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'kernel-azure-base-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'kernel-azure-devel-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'kernel-devel-azure-4.12.14-16.130.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'kernel-source-azure-4.12.14-16.130.1', 'sp':'5', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']},
    {'reference':'kernel-syms-azure-4.12.14-16.130.1', 'sp':'5', 'cpu':'x86_64', 'release':'SLES12', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sles-release-12.5']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) 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-azure / kernel-azure-base / kernel-azure-devel / etc');
}