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nessusThis script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.NEWSTART_CGSL_NS-SA-2022-0042_GLIBC.NASL
HistoryMay 10, 2022 - 12:00 a.m.

NewStart CGSL CORE 5.05 / MAIN 5.05 : glibc Vulnerability (NS-SA-2022-0042)

2022-05-1000:00:00
This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
126
newstart cgsl
glibc
vulnerability
core 5.05
main 5.05
denial of service
disclosure of information
cve-2021-35942
wordexp function
gnu c library

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.011

Percentile

84.8%

The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has glibc packages installed that are affected by a vulnerability:

  • The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations. (CVE-2021-35942)

Note that Nessus has not tested for this issue but has instead relied only on the applicationโ€™s self-reported version number.

##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from ZTE advisory NS-SA-2022-0042. The text
# itself is copyright (C) ZTE, Inc.
##

include('compat.inc');

if (description)
{
  script_id(160837);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/05/10");

  script_cve_id("CVE-2021-35942");

  script_name(english:"NewStart CGSL CORE 5.05 / MAIN 5.05 : glibc Vulnerability (NS-SA-2022-0042)");

  script_set_attribute(attribute:"synopsis", value:
"The remote NewStart CGSL host is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has glibc packages installed that are affected by
a vulnerability:

  - The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in
    parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in
    a denial of service or disclosure of information. This occurs because atoi was used but strtoul should
    have been used to ensure correct calculations. (CVE-2021-35942)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/notice/NS-SA-2022-0042");
  script_set_attribute(attribute:"see_also", value:"http://security.gd-linux.com/info/CVE-2021-35942");
  script_set_attribute(attribute:"solution", value:
"Upgrade the vulnerable CGSL glibc packages. Note that updated packages may not be available yet. Please contact ZTE for
more information.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:N/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-2021-35942");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2021/07/22");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/05/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/05/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-debuginfo-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-i18n");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-iconv");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-lang");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-locale");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:glibc-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_core:nscd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-debuginfo-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-headers");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-static");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:glibc-utils");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:zte:cgsl_main:nscd");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_core:5");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:zte:cgsl_main:5");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/ZTE-CGSL/release", "Host/ZTE-CGSL/rpm-list", "Host/cpu");

  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/ZTE-CGSL/release');
if (isnull(release) || release !~ "^CGSL (MAIN|CORE)") audit(AUDIT_OS_NOT, 'NewStart Carrier Grade Server Linux');

if (release !~ "CGSL CORE 5.05" &&
    release !~ "CGSL MAIN 5.05")
  audit(AUDIT_OS_NOT, 'NewStart CGSL CORE 5.05 / NewStart CGSL MAIN 5.05');

if (!get_kb_item('Host/ZTE-CGSL/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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'NewStart Carrier Grade Server Linux', cpu);

var flag = 0;

var pkgs = {
  'CGSL CORE 5.05': [
    'glibc-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-common-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-debuginfo-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-debuginfo-common-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-devel-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-headers-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-i18n-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-iconv-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-lang-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-locale-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-static-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-tools-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'glibc-utils-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite',
    'nscd-2.17-322.el7_9.cgslv5_5.0.9.g3179b16.lite'
  ],
  'CGSL MAIN 5.05': [
    'glibc-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-common-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-debuginfo-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-debuginfo-common-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-devel-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-headers-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-static-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'glibc-utils-2.17-322.el7_9.cgslv5_5.0.4.gef82d43',
    'nscd-2.17-322.el7_9.cgslv5_5.0.4.gef82d43'
  ]
};
var pkg_list = pkgs[release];

foreach (pkg in pkg_list)
  if (rpm_check(release:'ZTE ' + release, 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, 'glibc');
}
VendorProductVersionCPE
ztecgsl_coreglibcp-cpe:/a:zte:cgsl_core:glibc
ztecgsl_coreglibc-commonp-cpe:/a:zte:cgsl_core:glibc-common
ztecgsl_coreglibc-debuginfop-cpe:/a:zte:cgsl_core:glibc-debuginfo
ztecgsl_coreglibc-debuginfo-commonp-cpe:/a:zte:cgsl_core:glibc-debuginfo-common
ztecgsl_coreglibc-develp-cpe:/a:zte:cgsl_core:glibc-devel
ztecgsl_coreglibc-headersp-cpe:/a:zte:cgsl_core:glibc-headers
ztecgsl_coreglibc-i18np-cpe:/a:zte:cgsl_core:glibc-i18n
ztecgsl_coreglibc-iconvp-cpe:/a:zte:cgsl_core:glibc-iconv
ztecgsl_coreglibc-langp-cpe:/a:zte:cgsl_core:glibc-lang
ztecgsl_coreglibc-localep-cpe:/a:zte:cgsl_core:glibc-locale
Rows per page:
1-10 of 251

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

EPSS

0.011

Percentile

84.8%