Debian dla-4336 : isag - 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-4336. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(270712);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/10/17");

  script_cve_id("CVE-2022-39377", "CVE-2023-33204");

  script_name(english:"Debian dla-4336 : isag - 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 host has packages installed that are affected by multiple vulnerabilities as referenced in the
dla-4336 advisory.

    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-4336-1                [email protected]
    https://www.debian.org/lts/security/                    Thorsten Alteholz
    October 17, 2025                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : sysstat
    Version        : 12.5.2-2+deb11u1
    CVE ID         : CVE-2022-39377 CVE-2023-33204


    An issue has been found in sysstat, a system performance tools for Linux.

    CVE-2022-39377

        On 32 bit systems, allocate_structures contains a size_t overflow
        in sa_common.c. The allocate_structures function insufficiently
        checks bounds before arithmetic multiplication, allowing for an
        overflow in the size allocated for the buffer representing system
        activities. This issue may lead to Remote Code Execution (RCE).

    CVE-2023-33204

        sysstat allows a multiplication integer overflow in check_overflow
        in common.c. NOTE: this issue exists because of an incomplete fix
        for CVE-2022-39377 (see above).


    For Debian 11 bullseye, these problems have been fixed in version
    12.5.2-2+deb11u1.

    We recommend that you upgrade your sysstat packages.

    For the detailed security status of sysstat please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/sysstat

    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

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/sysstat");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2022-39377");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2023-33204");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/bullseye/sysstat");
  script_set_attribute(attribute:"solution", value:
"Upgrade the isag packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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-2023-33204");

  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:"2022/11/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/10/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/10/17");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:isag");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:sysstat");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:11.0");
  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) 2025 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]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 11.0', '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': 'isag', 'reference': '12.5.2-2+deb11u1'},
    {'release': '11.0', 'prefix': 'sysstat', 'reference': '12.5.2-2+deb11u1'}
];

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, 'isag / sysstat');
}