Lucene search

K
nessusThis script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.DEBIAN_DLA-3757.NASL
HistoryMar 11, 2024 - 12:00 a.m.

Debian dla-3757 : libnss3 - security update

2024-03-1100:00:00
This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
16
debian 10
libnss3
security update
multiple vulnerabilities
tls handshake
potentially exploitable crash
firefox
cve-2024-0743
numerical library
rsa cryptography
bleichenbacher attack
manger attack
padding modes
pkcs#1 v1.5
oaep
rsasvp
api calls
nessus scanner

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

42.2%

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3757 advisory.

  • An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This vulnerability affects Firefox < 122. (CVE-2024-0743)

  • It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether high order bits of the RSA decryption result are zero. This information can be used to mount a Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens before any padding operations, it affects all padding modes: PKCS#1 v1.5, OAEP, and RSASVP. Both API level calls and TLS server operation are affected. (CVE-2023-5388) (CVE-2023-5388)

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 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3757. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(191787);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/03/11");

  script_cve_id("CVE-2023-5388", "CVE-2024-0743");

  script_name(english:"Debian dla-3757 : libnss3 - security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing one or more security-related updates.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-3757 advisory.

  - An unchecked return value in TLS handshake code could have caused a potentially exploitable crash. This
    vulnerability affects Firefox < 122. (CVE-2024-0743)

  - It was discovered that the numerical library used in NSS for RSA cryptography leaks information whether
    high order bits of the RSA decryption result are zero. This information can be used to mount a
    Bleichenbacher or Manger like attack against all RSA decryption operations. As the leak happens before any
    padding operations, it affects all padding modes: PKCS#1 v1.5, OAEP, and RSASVP. Both API level calls and
    TLS server operation are affected. (CVE-2023-5388) (CVE-2023-5388)

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://security-tracker.debian.org/tracker/source-package/nss");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-5388");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2024-0743");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/nss");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libnss3 packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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:N/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-2024-0743");

  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:"2024/01/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/03/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/03/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libnss3-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}

include('debian_package.inc');

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);

var debian_release = get_kb_item('Host/Debian/release');
if ( isnull(debian_release) ) audit(AUDIT_OS_NOT, 'Debian');
debian_release = chomp(debian_release);
if (! preg(pattern:"^(10)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 10.0', 'Debian ' + debian_release);
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, 'Debian', cpu);

var pkgs = [
    {'release': '10.0', 'prefix': 'libnss3', 'reference': '2:3.42.1-1+deb10u8'},
    {'release': '10.0', 'prefix': 'libnss3-dev', 'reference': '2:3.42.1-1+deb10u8'},
    {'release': '10.0', 'prefix': 'libnss3-tools', 'reference': '2:3.42.1-1+deb10u8'}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var _release = NULL;
  var prefix = NULL;
  var reference = NULL;
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['prefix'])) prefix = package_array['prefix'];
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (_release && prefix && reference) {
    if (deb_check(release:_release, prefix:prefix, reference:reference)) flag++;
  }
}

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : deb_report_get()
  );
  exit(0);
}
else
{
  var tested = deb_pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libnss3 / libnss3-dev / libnss3-tools');
}
VendorProductVersionCPE
debiandebian_linuxlibnss3p-cpe:/a:debian:debian_linux:libnss3
debiandebian_linuxlibnss3-devp-cpe:/a:debian:debian_linux:libnss3-dev
debiandebian_linuxlibnss3-toolsp-cpe:/a:debian:debian_linux:libnss3-tools
debiandebian_linux10.0cpe:/o:debian:debian_linux:10.0

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

6.6 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

42.2%