AIX (IJ37226)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The text in the description was extracted from AIX Security
# Advisory bind_advisory20.asc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(158516);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/10/23");

  script_cve_id("CVE-2021-25219");

  script_name(english:"AIX (IJ37226)");

  script_set_attribute(attribute:"synopsis", value:
"The remote AIX host is missing a security patch.");
  script_set_attribute(attribute:"description", value:
"The version of AIX installed on the remote host is prior to APAR IJ37226. It is, therefore, affected by a vulnerability
as referenced in the IJ37226 advisory.

  - In BIND 9.3.0 -> 9.11.35, 9.12.0 -> 9.16.21, and versions 9.9.3-S1 -> 9.11.35-S1 and 9.16.8-S1 ->
    9.16.21-S1 of BIND Supported Preview Edition, as well as release versions 9.17.0 -> 9.17.18 of the BIND
    9.17 development branch, exploitation of broken authoritative servers using a flaw in response processing
    can cause degradation in BIND resolver performance. The way the lame cache is currently designed makes it
    possible for its internal data structures to grow almost infinitely, which may cause significant delays in
    client query processing. (CVE-2021-25219)

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://www.ibm.com/support/pages/apar/IJ37226");
  script_set_attribute(attribute:"see_also", value:"https://www.ibm.com/support/pages/node/6560382");
  script_set_attribute(attribute:"solution", value:
"Please apply the appropriate interim fix per APAR IJ37226.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-25219");

  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:"2022/03/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/03/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/03/02");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"AIX Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2022-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/AIX/lslpp", "Host/local_checks_enabled", "Host/AIX/version");

  exit(0);
}

include('aix.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if ( ! get_kb_item('Host/AIX/version') ) audit(AUDIT_OS_NOT, "AIX");
if ( ! get_kb_item('Host/AIX/lslpp') ) audit(AUDIT_PACKAGE_LIST_MISSING);

if ( get_kb_item('Host/AIX/emgr_failure') ) exit(0, 'This iFix check is disabled because : ' + get_kb_item('Host/AIX/emgr_failure') );

var constraints = [
    {'release': '7.3', 'ml': '00', 'sp': '01', 'patch': 'IJ37226s1b', 'package': 'bos.net.tcp.bind', 'minfilesetver': '7.3.0.0', 'maxfilesetver': '7.3.0.0'},
    {'release': '7.3', 'ml': '00', 'sp': '01', 'patch': 'IJ37226s1b', 'package': 'bos.net.tcp.bind_utils', 'minfilesetver': '7.3.0.0', 'maxfilesetver': '7.3.0.0'}
];

var flag = 0;
foreach var constraint (constraints) {
    var release = constraint['release'];
    var ml = constraint['ml'];
    var sp = constraint['sp'];
    var patch = constraint['patch'];
    var package = constraint['package'];
    var minfilesetver = constraint['minfilesetver'];
    var maxfilesetver = constraint['maxfilesetver'];
    if(aix_check_ifix(release: release, ml: ml, sp: sp, patch: patch, package: package, minfilesetver: minfilesetver, maxfilesetver: maxfilesetver) < 0) flag++;
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : aix_report_get()
  );
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected - AIX");