Debian DLA-3127-1 : libhttp-daemon-perl - 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-3127. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(165685);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/10");

  script_cve_id("CVE-2022-31081");

  script_name(english:"Debian DLA-3127-1 : libhttp-daemon-perl - LTS security update");

  script_set_attribute(attribute:"synopsis", value:
"The remote Debian host is missing a security-related update.");
  script_set_attribute(attribute:"description", value:
"The remote Debian 10 host has a package installed that is affected by a vulnerability as referenced in the dla-3127
advisory.

  - HTTP::Daemon is a simple http server class written in perl. Versions prior to 6.15 are subject to a
    vulnerability which could potentially be exploited to gain privileged access to APIs or poison
    intermediate caches. It is uncertain how large the risks are, most Perl based applications are served on
    top of Nginx or Apache, not on the `HTTP::Daemon`. This library is commonly used for local development and
    tests. Users are advised to update to resolve this issue. Users unable to upgrade may add additional
    request handling logic as a mitigation. After calling `my $rqst = $conn->get_request()` one could inspect
    the returned `HTTP::Request` object. Querying the 'Content-Length' (`my $cl = $rqst->header('Content-
    Length')`) will show any abnormalities that should be dealt with by a `400` response. Expected strings of
    'Content-Length' SHOULD consist of either a single non-negative integer, or, a comma separated repetition
    of that number. (that is `42` or `42, 42, 42`). Anything else MUST be rejected. (CVE-2022-31081)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://security-tracker.debian.org/tracker/source-package/libhttp-daemon-perl
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0dff3f89");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2022/dla-3127");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-31081");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/libhttp-daemon-perl");
  script_set_attribute(attribute:"solution", value:
"Upgrade the libhttp-daemon-perl packages.

For Debian 10 buster, this problem has been fixed in version 6.01-3+deb10u1.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/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:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-31081");

  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:"2022/06/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/09/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libhttp-daemon-perl");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Debian 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/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 release = get_kb_item('Host/Debian/release');
if ( isnull(release) ) audit(AUDIT_OS_NOT, 'Debian');
var release = chomp(release);
if (! preg(pattern:"^(10)\.[0-9]+", string:release)) audit(AUDIT_OS_NOT, 'Debian 10.0', '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': 'libhttp-daemon-perl', 'reference': '6.01-3+deb10u1'}
];

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, 'libhttp-daemon-perl');
}