Debian DSA-5587-1 : curl - security update

#%NASL_MIN_LEVEL 80900
#
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Debian Security Advisory dsa-5587. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(187288);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/02/02");

  script_cve_id("CVE-2023-46218", "CVE-2023-46219");
  script_xref(name:"IAVA", value:"2023-A-0674-S");

  script_name(english:"Debian DSA-5587-1 : curl - 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 11 / 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dsa-5587 advisory.

  - 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)

  - When saving HSTS data to an excessively long file name, curl could end up removing all contents, making
    subsequent requests using that file unaware of the HSTS status they should otherwise use. (CVE-2023-46219)

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://packages.debian.org/source/bookworm/curl");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/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/security/2023/dsa-5587");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-46218");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-46219");
  script_set_attribute(attribute:"solution", value:
"Upgrade the curl packages.

For the stable distribution (bookworm), these problems have been fixed in version 7.88.1-10+deb12u5.");
  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:"2023/12/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/12/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/12/24");

  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:11.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  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:"^(11)\.[0-9]+|^(12)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0 / 12.0', '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': '11.0', 'prefix': 'curl', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl3-gnutls', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl3-nss', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl4', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl4-doc', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl4-gnutls-dev', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl4-nss-dev', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '11.0', 'prefix': 'libcurl4-openssl-dev', 'reference': '7.74.0-1.3+deb11u11'},
    {'release': '12.0', 'prefix': 'curl', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl3-gnutls', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl3-nss', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl4', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl4-doc', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl4-gnutls-dev', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl4-nss-dev', 'reference': '7.88.1-10+deb12u5'},
    {'release': '12.0', 'prefix': 'libcurl4-openssl-dev', 'reference': '7.88.1-10+deb12u5'}
];

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');
}