Debian dsa-6412 : botan - 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-6412. The text
# itself is copyright (C) Software in the Public Interest, Inc.
#

include('compat.inc');

if (description)
{
  script_id(332087);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/05");

  script_cve_id("CVE-2026-44378");

  script_name(english:"Debian dsa-6412 : botan - 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-6412
advisory.

    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-6412-1                   [email protected]
    https://www.debian.org/security/                                  Aron Xu
    August 05, 2026                       https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : botan3
    CVE ID         : CVE-2026-44378
    Debian Bug     :

    Multiple security issues were discovered in Botan, a C++ cryptography
    library, which could result in denial of service, certificate validation
    bypass or authentication bypass.

    These issues have been addressed by updating botan3 to the new upstream
    release 3.12.0. As a consequence this update changes the SONAME of the
    shared library, and the runtime library package is renamed from
    libbotan-3-7 to libbotan-3-12. No package in the stable distribution links
    against the library, so no other packages in trixie are affected by this
    change.

    The libbotan-3-7 package is no longer built and will not be removed
    automatically on upgrade if it had been installed manually. Locally built
    or third-party software linking against libbotan-3-7 needs to be rebuilt
    against libbotan-3-12, after which the old library package can be removed.

    For the stable distribution (trixie), this problem has been fixed in
    version 3.12.0+dfsg-2~deb13u1.

    We recommend that you upgrade your botan3 packages.

    For the detailed security status of botan3 please refer to
    its security tracker page at:
    https://security-tracker.debian.org/tracker/botan3

    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/botan3");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-44378");
  script_set_attribute(attribute:"see_also", value:"https://packages.debian.org/source/trixie/botan3");
  script_set_attribute(attribute:"solution", value:
"Upgrade the botan packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-44378");

  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:"2026/05/27");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/05");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/05");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:botan");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbotan-3-12");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbotan-3-dev");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:libbotan-3-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python3-botan");
  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_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:"^(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': 'botan', 'reference': '3.12.0+dfsg-2~deb13u1'},
    {'release': '13.0', 'prefix': 'libbotan-3-12', 'reference': '3.12.0+dfsg-2~deb13u1'},
    {'release': '13.0', 'prefix': 'libbotan-3-dev', 'reference': '3.12.0+dfsg-2~deb13u1'},
    {'release': '13.0', 'prefix': 'libbotan-3-doc', 'reference': '3.12.0+dfsg-2~deb13u1'},
    {'release': '13.0', 'prefix': 'python3-botan', 'reference': '3.12.0+dfsg-2~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, 'botan / libbotan-3-12 / libbotan-3-dev / libbotan-3-doc / etc');
}