Debian DLA-3692-1 : curl - 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-3692. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(187271);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/02");

  script_cve_id("CVE-2023-28322", "CVE-2023-46218");
  script_xref(name:"IAVA", value:"2023-A-0259-S");
  script_xref(name:"IAVA", value:"2023-A-0674-S");

  script_name(english:"Debian DLA-3692-1 : curl - 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-3692 advisory.

  - An information disclosure vulnerability exists in curl <v8.1.0 when doing HTTP(S) transfers, libcurl might
    erroneously use the read callback (`CURLOPT_READFUNCTION`) to ask for data to send, even when the
    `CURLOPT_POSTFIELDS` option has been set, if the same handle previously wasused to issue a `PUT` request
    which used that callback. This flaw may surprise the application and cause it to misbehave and either send
    off the wrong data or use memory after free or similar in the second transfer. The problem exists in the
    logic for a reused handle when it is (expected to be) changed from a PUT to a POST. (CVE-2023-28322)

  - This flaw allows a malicious HTTP server to set super cookies in curl that are then passed back to more
    origins than what is otherwise allowed or possible. This allows a site to set cookies that then would get
    sent to different and unrelated sites and domains. It could do this by exploiting a mixed case flaw in
    curl's function that verifies a given cookie domain against the Public Suffix List (PSL). For example a
    cookie could be set with `domain=co.UK` when the URL used a lower case hostname `curl.co.uk`, even though
    `co.uk` is listed as a PSL domain. (CVE-2023-46218)

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=926148");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/buster/curl");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/curl");
  script_set_attribute(attribute:"see_also", value:"https://www.debian.org/lts/security/2023/dla-3692");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-28322");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-46218");
  script_set_attribute(attribute:"solution", value:
"Upgrade the curl packages.

For Debian 10 buster, these problems have been fixed in version 7.64.0-4+deb10u8.");
  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-2023-46218");

  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:"2023/05/19");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/22");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:curl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-gnutls");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl3-nss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-gnutls-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-nss-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libcurl4-openssl-dev");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:10.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023-2024 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': 'curl', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl3-gnutls', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl3-nss', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl4', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl4-doc', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl4-gnutls-dev', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl4-nss-dev', 'reference': '7.64.0-4+deb10u8'},
    {'release': '10.0', 'prefix': 'libcurl4-openssl-dev', 'reference': '7.64.0-4+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_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, 'curl / libcurl3-gnutls / libcurl3-nss / libcurl4 / libcurl4-doc / etc');
}