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This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SUSE_SU-2022-0363-1.NASL
HistoryFeb 11, 2022 - 12:00 a.m.

SUSE SLES15 Security Update : kernel (SUSE-SU-2022:0363-1)

2022-02-1100:00:00
This script is Copyright (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
19

8 High

AI Score

Confidence

Low

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2022:0363-1 advisory.

  • The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85. (CVE-2020-28097)

  • A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 (CVE-2021-22600)

  • In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a race condition. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-160822094References: Upstream kernel (CVE-2021-39648)

  • In ufshcd_eh_device_reset_handler of ufshcd.c, there is a possible out of bounds read due to a missing bounds check. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-194696049References: Upstream kernel (CVE-2021-39657)

  • In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an incorrect flag check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-210292376References: Upstream kernel (CVE-2021-39685)

  • A vulnerability was found in the Linux kernel’s EBPF verifier when handling internal data structures.
    Internal memory locations could be returned to userspace. A local attacker with the permissions to insert eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit mitigations in place for the kernel. (CVE-2021-4159)

  • A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11.
    This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory object. (CVE-2021-44733)

  • pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.
    (CVE-2021-45095)

  • A flaw was found in the Linux kernel. A null pointer dereference in bond_ipsec_add_sa() may lead to local denial of service. (CVE-2022-0286)

  • A random memory access flaw was found in the Linux kernel’s GPU i915 kernel driver functionality in the way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or escalate their privileges on the system. (CVE-2022-0330)

  • A stack overflow flaw was found in the Linux kernel’s TIPC protocol functionality in the way a user sends a packet with malicious content where the number of domain member nodes is higher than the 64 allowed.
    This flaw allows a remote user to crash the system or possibly escalate their privileges if they have access to the TIPC network. (CVE-2022-0435)

  • kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

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, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:0363-1. The text itself
# is copyright (C) SUSE.
##

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

if (description)
{
  script_id(157898);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/09");

  script_cve_id(
    "CVE-2020-28097",
    "CVE-2021-4159",
    "CVE-2021-22600",
    "CVE-2021-39648",
    "CVE-2021-39657",
    "CVE-2021-39685",
    "CVE-2021-44733",
    "CVE-2021-45095",
    "CVE-2022-0286",
    "CVE-2022-0330",
    "CVE-2022-0435",
    "CVE-2022-22942"
  );
  script_xref(name:"SuSE", value:"SUSE-SU-2022:0363-1");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/02");

  script_name(english:"SUSE SLES15 Security Update : kernel (SUSE-SU-2022:0363-1)");

  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 SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in
the SUSE-SU-2022:0363-1 advisory.

  - The vgacon subsystem in the Linux kernel before 5.8.10 mishandles software scrollback. There is a
    vgacon_scrolldelta out-of-bounds read, aka CID-973c096f6a85. (CVE-2020-28097)

  - A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through
    crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected
    versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755 (CVE-2021-22600)

  - In gadget_dev_desc_UDC_show of configfs.c, there is a possible disclosure of kernel heap memory due to a
    race condition. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-160822094References: Upstream kernel (CVE-2021-39648)

  - In ufshcd_eh_device_reset_handler of ufshcd.c, there is a possible out of bounds read due to a missing
    bounds check. This could lead to local information disclosure with System execution privileges needed.
    User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID:
    A-194696049References: Upstream kernel (CVE-2021-39657)

  - In various setup methods of the USB gadget subsystem, there is a possible out of bounds write due to an
    incorrect flag check. This could lead to local escalation of privilege with no additional execution
    privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android
    kernelAndroid ID: A-210292376References: Upstream kernel (CVE-2021-39685)

  - A vulnerability was found in the Linux kernel's EBPF verifier when handling internal data structures.
    Internal memory locations could be returned to userspace. A local attacker with the permissions to insert
    eBPF code to the kernel can use this to leak internal kernel memory details defeating some of the exploit
    mitigations in place for the kernel. (CVE-2021-4159)

  - A use-after-free exists in drivers/tee/tee_shm.c in the TEE subsystem in the Linux kernel through 5.15.11.
    This occurs because of a race condition in tee_shm_get_from_id during an attempt to free a shared memory
    object. (CVE-2021-44733)

  - pep_sock_accept in net/phonet/pep.c in the Linux kernel through 5.15.8 has a refcount leak.
    (CVE-2021-45095)

  - A flaw was found in the Linux kernel. A null pointer dereference in bond_ipsec_add_sa() may lead to local
    denial of service. (CVE-2022-0286)

  - A random memory access flaw was found in the Linux kernel's GPU i915 kernel driver functionality in the
    way a user may run malicious code on the GPU. This flaw allows a local user to crash the system or
    escalate their privileges on the system. (CVE-2022-0330)

  - A stack overflow flaw was found in the Linux kernel's TIPC protocol functionality in the way a user sends
    a packet with malicious content where the number of domain member nodes is higher than the 64 allowed.
    This flaw allows a remote user to crash the system or possibly escalate their privileges if they have
    access to the TIPC network. (CVE-2022-0435)

  - kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)

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/1154353");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1154488");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1160634");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1176447");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1177599");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1183405");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1185377");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187428");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1187723");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1188605");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1191881");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193096");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193506");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193767");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193802");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193861");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193864");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1193867");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194048");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194227");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194291");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1194880");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195009");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195062");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195065");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195073");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195183");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195184");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195254");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195267");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195293");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1195371");
  script_set_attribute(attribute:"see_also", value:"https://lists.suse.com/pipermail/sle-updates/2022-February/021670.html");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2020-28097");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-22600");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39648");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39657");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-39685");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-4159");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-44733");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2021-45095");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-0286");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-0330");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-0435");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-22942");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/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:N/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-2022-0435");

  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:"metasploit_name", value:'vmwgfx Driver File Descriptor Handling Priv Esc');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/02/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/02/11");

  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-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:15");
  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) 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/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)\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLES15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLES15', '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 == "SLES15" && (! preg(pattern:"^(3)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP3", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'kernel-azure-5.3.18-150300.38.40.4', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-public-cloud-release-15.3']},
    {'reference':'kernel-azure-devel-5.3.18-150300.38.40.4', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-public-cloud-release-15.3']},
    {'reference':'kernel-devel-azure-5.3.18-150300.38.40.4', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-public-cloud-release-15.3']},
    {'reference':'kernel-source-azure-5.3.18-150300.38.40.4', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-public-cloud-release-15.3']},
    {'reference':'kernel-syms-azure-5.3.18-150300.38.40.1', 'sp':'3', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-module-public-cloud-release-15.3']}
];

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_HOLE,
      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-devel / kernel-devel-azure / etc');
}

References

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8 High

AI Score

Confidence

Low

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