openSUSE 16 Security Update : libarchive (openSUSE-SU-2026:21631-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# openSUSE Security Update openSUSE-SU-2026:21631-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(341175);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/28");

  script_name(english:"openSUSE 16 Security Update : libarchive (openSUSE-SU-2026:21631-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote openSUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE-
SU-2026:21631-1 advisory.

    - Fix creation of temporary files in target directory (bsc#1254340)
    - Fix out-of-bounds buffer overrun when using p[H_LEVEL_OFFSET] (bsc#1254341)
    - Fix buffer overrun in archive_le32dec when reading truncated 7zip headers (bsc#1254342)
    - Fix NULL pointer dereference in archive_acl_from_text_w() (bsc#1260998)
    - Fix SEGV in check_7zip_header_in_sfx via ELF offset validation (bsc#1260999)
    - Fix out-of-bounds access on ELF 64-bit header (bsc#1261000)
    - Fix RAR5 memory leak with many filters (bsc#1261002)
    - Fix file descriptor leak in mtree parser cleanup (bsc#1261003)

Tenable has extracted the preceding description block directly from the SUSE 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://bugzilla.suse.com/1254340");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1254341");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1254342");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260998");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1260999");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1261000");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1261002");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1261003");
  script_set_attribute(attribute:"solution", value:
"Update the affected bsdtar, libarchive-devel and / or libarchive13 packages.");
  script_set_attribute(attribute:"risk_factor", value:"Medium");

  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:"2026/08/24");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/24");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/28");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:bsdtar");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libarchive-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:libarchive13");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:16.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/SuSE/release');
if (isnull(os_release) || os_release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, 'openSUSE');
var _os_ver = pregmatch(pattern: "^SUSE([\d.]+)", string:os_release);
if (isnull(_os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'openSUSE');
_os_ver = _os_ver[1];
if (os_release !~ "^(SUSE16\.0)$") audit(AUDIT_OS_RELEASE_NOT, 'openSUSE', '16.0', os_release);
if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'openSUSE ' + _os_ver, cpu);

var pkgs = [
    {'reference':'bsdtar-3.8.1-160000.4.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libarchive-devel-3.8.1-160000.4.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'libarchive13-3.8.1-160000.4.1', 'release':'SUSE16.0', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var _cpu = NULL;
  var rpm_spec_vers_cmp = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = package_array['release'];
  if (!empty_or_null(package_array['cpu'])) cpu = package_array['cpu'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (rpm_check(release:_release, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bsdtar / libarchive-devel / libarchive13');
}