Debian DLA-3492-1 : yajl - LTS security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dla-3492. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(178173);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/11");

  script_cve_id("CVE-2017-16516", "CVE-2022-24795", "CVE-2023-33460");

  script_name(english:"Debian DLA-3492-1 : yajl - LTS 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-3492 advisory.

  - In the yajl-ruby gem 1.3.0 for Ruby, when a crafted JSON file is supplied to Yajl::Parser.new.parse, the
    whole ruby process crashes with a SIGABRT in the yajl_string_decode function in yajl_encode.c. This
    results in the whole ruby process terminating and potentially a denial of service. (CVE-2017-16516)

  - yajl-ruby is a C binding to the YAJL JSON parsing and generation library. The 1.x branch and the 2.x
    branch of `yajl` contain an integer overflow which leads to subsequent heap memory corruption when dealing
    with large (~2GB) inputs. The reallocation logic at `yajl_buf.c#L64` may result in the `need` 32bit
    integer wrapping to 0 when `need` approaches a value of 0x80000000 (i.e. ~2GB of data), which results in a
    reallocation of buf->alloc into a small heap chunk. These integers are declared as `size_t` in the 2.x
    branch of `yajl`, which practically prevents the issue from triggering on 64bit platforms, however this
    does not preclude this issue triggering on 32bit builds on which `size_t` is a 32bit integer. Subsequent
    population of this under-allocated heap chunk is based on the original buffer size, leading to heap memory
    corruption. This vulnerability mostly impacts process availability. Maintainers believe exploitation for
    arbitrary code execution is unlikely. A patch is available and anticipated to be part of yajl-ruby version
    1.4.2. As a workaround, avoid passing large inputs to YAJL. (CVE-2022-24795)

  - There's a memory leak in yajl 2.1.0 with use of yajl_tree_parse function. which will cause out-of-memory
    in server and cause crash. (CVE-2023-33460)

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://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1040036");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/yajl");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2023/dla-3492");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2017-16516");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-24795");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-33460");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/yajl");
  script_set_attribute(attribute:"solution", value:
"Upgrade the yajl packages.

For Debian 10 buster, these problems have been fixed in version 2.1.0-3+deb10u2.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-24795");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2017/11/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/07/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/07/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libyajl-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libyajl-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libyajl2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libyajl2-dbg");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:yajl-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) 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/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': 'libyajl-dev', 'reference': '2.1.0-3+deb10u2'},
    {'release': '10.0', 'prefix': 'libyajl-doc', 'reference': '2.1.0-3+deb10u2'},
    {'release': '10.0', 'prefix': 'libyajl2', 'reference': '2.1.0-3+deb10u2'},
    {'release': '10.0', 'prefix': 'libyajl2-dbg', 'reference': '2.1.0-3+deb10u2'},
    {'release': '10.0', 'prefix': 'yajl-tools', 'reference': '2.1.0-3+deb10u2'}
];

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_WARNING,
    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, 'libyajl-dev / libyajl-doc / libyajl2 / libyajl2-dbg / yajl-tools');
}