Debian dsa-6555 : gir1.2-rsvg-2.0 - 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-6555. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(365112);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/12");

  script_cve_id("CVE-2026-96889");

  script_name(english:"Debian dsa-6555 : gir1.2-rsvg-2.0 - 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 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6555
advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6555-1                   [email protected]
    https://www.debian.org/security/                       Moritz Muehlenhoff
    October 12, 2026                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : librsvg
    CVE ID         : CVE-2026-96889

    It was discovered that librsvg, a library to render Scalable Vector
    Graphics, incorrectly parsed files with nested XML includes, which could
    result in denial of service or potentially the execution of arbitrary
    code.

    For the stable distribution (trixie), this problem has been fixed in
    version 2.60.0+dfsg-1+deb13u1.

    We recommend that you upgrade your librsvg packages.

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

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

    Mailing list: [email protected]

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

Note that Nessus has not tested for this issue 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/librsvg");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-96889");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/librsvg");
  script_set_attribute(attribute:"solution", value:
"Upgrade the gir1.2-rsvg-2.0 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:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-96889");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/09/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:gir1.2-rsvg-2.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-bin");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:librsvg2-tests");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.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:"^(13)\.[0-9]+", string:debian_release)) audit(AUDIT_OS_NOT, 'Debian 13.0', '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': '13.0', 'prefix': 'gir1.2-rsvg-2.0', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-2', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-bin', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-common', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-dev', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-doc', 'reference': '2.60.0+dfsg-1+deb13u1'},
    {'release': '13.0', 'prefix': 'librsvg2-tests', 'reference': '2.60.0+dfsg-1+deb13u1'}
];

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, 'gir1.2-rsvg-2.0 / librsvg2-2 / librsvg2-bin / librsvg2-common / etc');
}